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* In ''VideoGame/CropRotation'', collecting different crops of the same plant type or flavor adds passive bonuses to synergies such as increasing the value of all crops of that specific flavor after they mature for harvesting.
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* In ''[[VideoGame/PokemonGoldAndSilver Pokemon HeartGold and SoulSilver]]'', depending on their version, the player gets an item that lets them capture either Kyogre or Groudon. Regardless of which one they caught, however, Oak's reaction is to state that he thinks of the pair as a set, and wonders if you can capture the other one. However, [[OneGameForThePriceOfTwo you can only capture one of the pair in each version]] -- and [[GuideDangIt the next event won't be triggered by any]] ''[[GuideDangIt normal]]'' [[GuideDangIt Groudon/Kyogre]] -- you ''specifically'' need one who was lured in and caught by the exclusive HG/SS item.
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* ''Franchise/{{Pokemon}}'':
** In ''[[VideoGame/PokemonGoldAndSilver Pokemon HeartGold and SoulSilver]]'', depending on their version, the player gets an item that lets them capture either Kyogre or Groudon. Regardless of which one they caught, however, Oak's reaction is to state that he thinks of the pair as a set, and wonders if you can capture the other one. However, [[OneGameForThePriceOfTwo you can only capture one of the pair in each version]] -- and [[GuideDangIt the next event won't be triggered by any]] ''[[GuideDangIt normal]]'' [[GuideDangIt Groudon/Kyogre]] -- you ''specifically'' need one who was lured in and caught by the exclusive HG/SS item.
** In ''[[VideoGame/PokemonGoldAndSilver Pokemon HeartGold and SoulSilver]]'', depending on their version, the player gets an item that lets them capture either Kyogre or Groudon. Regardless of which one they caught, however, Oak's reaction is to state that he thinks of the pair as a set, and wonders if you can capture the other one. However, [[OneGameForThePriceOfTwo you can only capture one of the pair in each version]] -- and [[GuideDangIt the next event won't be triggered by any]] ''[[GuideDangIt normal]]'' [[GuideDangIt Groudon/Kyogre]] -- you ''specifically'' need one who was lured in and caught by the exclusive HG/SS item.
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* ''[[VideoGame/QuiltsAndCatsOfCalico Quilts & Cats of Calico]]'': Besides completing Design Goals, which involves completing sets of colors, patterns, or both, to score points, you can chain three Patch Tiles of the same color to get a button of that color and collect all six of them to get the Rainbow Button. You can also attract cats by arranging Patch Tiles of the same pattern by their number in the chain or the chain's shape, giving you more bonus points.
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** Infamous equipment. This type of equipment has a set of bonuses that are activated based on how many items from that set are equipped, granting a slight bonus if only one item is held and additional bonuses for every extra piece. The Infamous set the player is given as an introduction to the mechanic is [=LexCorp=]'s "The Cost of Business" set, which increases CriticalHit damage dealt to Brutes with one item equipped. With a second item equipped, the user's critical hits charge their Suicide Strike meter and their Traversal Attack electrifies enemies hit, at the cost of the latter dealing half damage.
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** Infamous equipment. This type of equipment has a set of bonuses that are activated based on how many items from that set are equipped, granting a slight bonus if only one item is held and additional bonuses for every extra piece. The Infamous set the player is given as an introduction to the mechanic is [=LexCorp=]'s "The Cost of Business" set, which increases CriticalHit damage dealt to Brutes with one item equipped. With a second item equipped, the user's critical hits charge their Suicide Strike meter and their Traversal Attack electrifies Attacks electrify enemies hit, but at the cost of the latter dealing half damage.
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* ''VideoGame/SuicideSquadKillTheJusticeLeague''
** Villain Synergies. Certain combinations of Notorious gear can activate a Synergy bonus (i.e., equipping a Bane and Black Mask item grants the "Rage Itself" bonus, granting a stacking damage bonus each time the user inflicts Crazed).
** Infamous equipment. This type of equipment has a set of bonuses that are activated based on how many items from that set are equipped, granting a slight bonus if only one item is held and additional bonuses for every extra piece. The Infamous set the player is given as an introduction to the mechanic is [=LexCorp=]'s "The Cost of Business" set, which increases CriticalHit damage dealt to Brutes with one item equipped. With a second item equipped, the user's critical hits charge their Suicide Strike meter and their Traversal Attack electrifies enemies hit, at the cost of the latter dealing half damage.
** Villain Synergies. Certain combinations of Notorious gear can activate a Synergy bonus (i.e., equipping a Bane and Black Mask item grants the "Rage Itself" bonus, granting a stacking damage bonus each time the user inflicts Crazed).
** Infamous equipment. This type of equipment has a set of bonuses that are activated based on how many items from that set are equipped, granting a slight bonus if only one item is held and additional bonuses for every extra piece. The Infamous set the player is given as an introduction to the mechanic is [=LexCorp=]'s "The Cost of Business" set, which increases CriticalHit damage dealt to Brutes with one item equipped. With a second item equipped, the user's critical hits charge their Suicide Strike meter and their Traversal Attack electrifies enemies hit, at the cost of the latter dealing half damage.
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Examples of {{Set Bonus}}es in VideoGames.
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* ''VideoGame/HonkaiImpact3rd'': The Valkryies can be equipped with Stigmata, which are essentially {{Power Tattoo}}s that grant them extra abilities. They come in sets of 3, each set based around a particular character or theme; each individual Stigmata from a set gives boosts on its own, but equipping multiple Stigmata from one set gives additional abilities. For instance, equipping Pardofelis with two pieces of the Bastet Stigmata set causes the Valkyrie team to deal 50% more total damage for 15 seconds if an Ice-type Valkyrie freezes enemies, and equipping the entire set gives a general 30% damage boost to the entire team and causes freeze effects to last for 20% longer.
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** After one more expansion, ''Dragonflight'' brought them back following the earlier model.
** All through this, there have been many other minor sets that were not restricted to a single class. Typically they were only two items, like a ring and a necklace, or two weapons.
** All through this, there have been many other minor sets that were not restricted to a single class. Typically they were only two items, like a ring and a necklace, or two weapons.
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** After one more expansion, ''Shadowlands'' brought sets back following the earlier model, and ''Dragonflight'' brought them back following the earlier model.
followed suit.
** All through this, there have been many other minor sets that were not restricted to a single class. Typically they were only two or three items, like aring ring, a necklace and a necklace, cloak, or two weapons.
** All through this, there have been many other minor sets that were not restricted to a single class. Typically they were only two or three items, like a
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* In ''VideoGame/TheWorldEndsWithYou'', many "Gatito" brand pins only function in battle if the player can collect all the pins in a set. The "Darklit Planets" set (comprising six pins) is an exception as each ''can'' be used individually, but they power up significantly if the player has all six. [[GuideDangIt Which is no easy task]], [[BraggingRightsReward and involves beating the]] BonusBoss [[HarderThanHard on the highest difficulty]].
* ''VideoGame/WorldOfWarcraft'' has an armor set for each class for each tier or season for both [[PlayerVersusPlayer PVP]] and PVE. That's a lot of sets.
** There are also sets you can craft, and sets that can get dropped. There are also sets of 2 items, 3 items, 4 items, etc... including one set that's nothing but two one-handed weapons.
** Used to be played straight with ''World Of Warcraft'''s item sets which grant increasing bonuses the more items from a given set are equipped. Downplayed nowadays so that people would actually have a choice of equipment; a typical set has 5 parts with bonuses awarded for 2 and 4 matching items, while before the Burning Crusade expansion sets had 8 parts and all were required to get the best bonus.
* ''VideoGame/WorldOfWarcraft'' has an armor set for each class for each tier or season for both [[PlayerVersusPlayer PVP]] and PVE. That's a lot of sets.
** There are also sets you can craft, and sets that can get dropped. There are also sets of 2 items, 3 items, 4 items, etc... including one set that's nothing but two one-handed weapons.
** Used to be played straight with ''World Of Warcraft'''s item sets which grant increasing bonuses the more items from a given set are equipped. Downplayed nowadays so that people would actually have a choice of equipment; a typical set has 5 parts with bonuses awarded for 2 and 4 matching items, while before the Burning Crusade expansion sets had 8 parts and all were required to get the best bonus.
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* In ''VideoGame/TheWorldEndsWithYou'', many "Gatito" brand pins only function in battle if the player can collect all the pins in a set. The "Darklit Planets" set (comprising six pins) is an exception as each ''can'' be used individually, but they power up significantly if the player has all six. [[GuideDangIt Which is no easy task]], [[BraggingRightsReward and involves beating the]] BonusBoss the bonus boss [[HarderThanHard on the highest difficulty]].
difficulty]], making it a BraggingRightsReward.
* ''VideoGame/WorldOfWarcraft'' has many item sets with bonuses, with an armor set for each class for each raid tieror and for each season for both of [[PlayerVersusPlayer PVP]] and PVE.PVP]]. That's a lot of sets.
**There are In the classic game, most armor sets covered all eight armor slots and had the strongest bonus for all eight, which made full sets very rare with how difficult it was to regularly run raids. An exception was the sets from the Ruins of Ahn'Qiraj raid, which consisted of a weapon, a ring and a cloak, and could be combined with any other raid set.
** In the ''Burning Crusade'' expansion, raid sets were reduced to 5 slots, and the maximum bonus came at 4 items, making them easier to collect and mix with other gear. However the last tier of sets was extended by the last patch, with 3 new items but no new bonuses, with the result that this set could be combined with an earlier set to gain both of their benefits. The expansion alsosets you can craft, and had [=PvP=] armor sets that can get dropped. There are also sets of 2 items, 3 items, 4 items, etc... including one set that's nothing but two one-handed weapons.
** Used to be played straight with ''World Of Warcraft'''s item sets which grant increasingwere updated every patch (so they wouldn't fall behind those from raids), however they had the same bonuses for any class for the more items from a given set are equipped. Downplayed nowadays so that people would actually have a choice of equipment; a typical set has 5 parts entire expansion, with bonuses awarded for 2 and 4 matching items, while before only higher stats.
** The pattern set down in the Burning Crusadeexpansion lasted for five more expansions, with a few changes like ''Mists of Pandaria'' making some [=PvP=] gear craftable. Then in ''Battle for Azeroth'', it was decided to end these sets had 8 parts and all in favor of more gear items with their own custom effects.
** After one more expansion, ''Dragonflight'' brought them back following the earlier model.
** All through this, there have been many other minor sets that wererequired not restricted to get the best bonus.a single class. Typically they were only two items, like a ring and a necklace, or two weapons.
* ''VideoGame/WorldOfWarcraft'' has many item sets with bonuses, with an armor set for each class for each raid tier
**
** In the ''Burning Crusade'' expansion, raid sets were reduced to 5 slots, and the maximum bonus came at 4 items, making them easier to collect and mix with other gear. However the last tier of sets was extended by the last patch, with 3 new items but no new bonuses, with the result that this set could be combined with an earlier set to gain both of their benefits. The expansion also
** Used to be played straight with ''World Of Warcraft'''s item sets which grant increasing
** The pattern set down in the Burning Crusade
** After one more expansion, ''Dragonflight'' brought them back following the earlier model.
** All through this, there have been many other minor sets that were
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**''VideoGame/ThirtyXX'' adds two more: Vagrant (corruption) set bonus reduces corruption bar drain, Zookeeper (repros) set will enhance each repro a lot. There are also two prototype augments that make the player have a set bonus with one less equipment present, at a price.
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* ''VideoGame/TeamFortress2'' used these, with one for every class but TheEngineer. They were quite blatant RevenueEnhancingDevices, being difficult to [[ItemCrafting craft in game]] and being offered in a bundle for a discount. The second wave of sets didn't require the themed hat to get the bonus, so they are more feasible to collect without spending real money. As of the July 10, 2013 update, however, the original eight sets no longer affect gameplay, changing this from set bonus to a CosmeticAward which leave [[CallingCard specialized markers]] whenever you get a kill while using them.
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* ''VideoGame/TeamFortress2'' used these, with one for every class but TheEngineer. They were quite blatant RevenueEnhancingDevices, being difficult to [[ItemCrafting craft in game]] and being offered in a bundle for a discount. The second wave of sets didn't require the themed hat to get the bonus, so they are more feasible to collect without spending real money. As of the July 10, In 2013 update, however, the original eight sets they were changed to no longer affect gameplay, effect gameplay (both due to their pay-to-win nature and the fact that you couldn’t actually tell if somebody had the full set just by looking at them), changing this from set bonus to a CosmeticAward which leave [[CallingCard specialized markers]] whenever you get a kill while using them.
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* ''[[VideoGame/{{Onmyoji}} Onmyōji]]'': Equipping a ''[[{{Mon}} shikigami]]'' with two similar ''mitama'' gives a great boost in a certain stats, while four of the same type gives special effect unique to each type.
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* ''[[VideoGame/{{Onmyoji}} Onmyōji]]'': ''VideoGame/Onmyoji2016'': Equipping a ''[[{{Mon}} shikigami]]'' with two similar ''mitama'' gives a great boost in a certain stats, while four of the same type gives special effect unique to each type.
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* The Seven Chaos Emeralds in nearly all ''VideoGame/SonicTheHedgehog'' games; which are usually valuable to the player only when they are all collected. Originally, [[PlotCoupon collecting them]] unlocked the GoodEnding, and in later games the TrueFinalBoss. They became very notable during the end of the classic era, when collecting all seven bestowed a SuperMode on Sonic or an ally during actual gameplay (''VideoGame/Sonic3AndKnuckles'' had the Super Emeralds -- collecting all of ''those'' induced an even greater Super Mode). Individually, they rarely serve as anything more important than a PlotCoupon, maybe they might even allow for CutscenePowerToTheMax, but in terms of functional gameplay, nada. The exception is Chaos Control, a teleportation technique that requires possession of at least one Chaos Emerald, though [[GameplayAndStorySegregation this rule isn't consistently followed in gameplay]].
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* The Seven Chaos Emeralds in nearly all ''VideoGame/SonicTheHedgehog'' ''Franchise/SonicTheHedgehog'' games; which are usually valuable to the player only when they are all collected. Originally, [[PlotCoupon collecting them]] unlocked the GoodEnding, and in later games the TrueFinalBoss. They became very notable during the end of the classic era, when collecting all seven bestowed a SuperMode on Sonic or an ally during actual gameplay (''VideoGame/Sonic3AndKnuckles'' had the Super Emeralds -- collecting all of ''those'' induced an even greater Super Mode). Individually, they rarely serve as anything more important than a PlotCoupon, maybe they might even allow for CutscenePowerToTheMax, but in terms of functional gameplay, nada. The exception is Chaos Control, a teleportation technique that requires possession of at least one Chaos Emerald, though [[GameplayAndStorySegregation this rule isn't consistently followed in gameplay]].
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* ''VideoGame/{{Warframe}}'' has some mods come in sets. Set mods give a bonus whose efficiency is multiplied by the number of mods in the set you currently have equipped, encouraging you to equip more of that set's mods.
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* ''VideoGame/{{Warframe}}'' has some ''VideoGame/{{Warframe}}'':
** Some mods come in sets. Set mods give a bonus whose efficiency is multiplied by the number of mods in the set you currently have equipped, encouraging you to equip more of that set'smods.mods.
** The Incarnon forms of the Stalker's weapons, Dread, Despair, and Hate, have evolutions that require you to equip all three of them in order to get their full effect.
** Some mods come in sets. Set mods give a bonus whose efficiency is multiplied by the number of mods in the set you currently have equipped, encouraging you to equip more of that set's
** The Incarnon forms of the Stalker's weapons, Dread, Despair, and Hate, have evolutions that require you to equip all three of them in order to get their full effect.
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* ''VideoGame/FortuneStreet'' is similar in nature to ''Monopoly''. Collecting all of the same color command tiles results in a 50% increase in all of the tiles in that color's value. It also showed up in ''VideoGame/KingdomHeartsBirthBySleep'' has a minigame called Command Board.
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* ''VideoGame/FortuneStreet'' is similar in nature to ''Monopoly''. Collecting all of the same color command tiles results in a 50% increase in all of the tiles in that color's value. It The game also showed up in ''VideoGame/KingdomHeartsBirthBySleep'' has as a minigame called Command Board.
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* ''[[VideoGame/{{Boktai}} Boktai 3: Sabata's Counterattack]]'' has the "dark" set of armor: the Wolf Fang that halves gained experience, the Bat Wing that halves your resistance to all four elements, the Undead Fingernail that doubles energy consumption, and the Rat Tail that drains energy as you move. On their own they are {{Poison Mushroom}}s, but if you equip all four at once it reverses their effects with double experience, double elemental resistance, halved energy consumption, and ''replenishing'' energy as you move.
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* "Diplomacy - DV" (a custom map for ''VideoGame/StarcraftII'') gives bonuses and achievements for controlling certain cities, either perennially or before a certain year. Usually it's more money from trade routes, but sometimes it's extra units or abilities, such as being the Holy Roman Emperor (regardless of religion) by controlling at least four of the seven electoral seats, granting a small squad of units every year.
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* ''{{VideoGame/Valheim}}'': Different armor sets have different effects, like the Root et increasing bow skill but slowing you down, the Fenris set increasing move speed and unarmed damage along with increasing frost and fire resistance, the Troll set making you sneakier, etc.
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* ''{{VideoGame/Valheim}}'': Different armor sets have different effects, like the Root et set increasing bow skill but slowing you down, the Fenris set increasing move speed and unarmed damage along with increasing frost and fire resistance, the Troll set making you sneakier, etc.
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* ''{{VideoGame/Valheim}}'': Different armor sets have different effects, like the Root et increasing bow skill but slowing you down, the Fenris set increasing move speed and unarmed damage, the Troll set making you sneakier, etc.
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* ''{{VideoGame/Valheim}}'': Different armor sets have different effects, like the Root et increasing bow skill but slowing you down, the Fenris set increasing move speed and unarmed damage, damage along with increasing frost and fire resistance, the Troll set making you sneakier, etc.
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* In ''VideoGame/{{Drakensang}}'', as part of the plot you have to collect all the parts of the Fire Armor (which is, helm, gloves, boots, greaves, armor, shield and InfinityPlusOneSword. The last one depends on the main character's WeaponOfChoice).
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* In ''VideoGame/{{Drakensang}}'', as part of the plot you have to collect all the parts of the Fire Armor (which is, helm, gloves, boots, greaves, armor, shield and InfinityPlusOneSword. The last one depends on the main character's WeaponOfChoice).weapon choice).
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* ''KingdomsOfCamelot'' on Facebook has a full set bonus now that the last of the four Guardians has been released. Only one Guardian can be active at a time, but unlocking all four gives the player a bonus, likely either resources or items for use in-game.
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* ''KingdomsOfCamelot'' ''VideoGame/KingdomsOfCamelot'' on Facebook has a full set bonus now that the last of the four Guardians has been released. Only one Guardian can be active at a time, but unlocking all four gives the player a bonus, likely either resources or items for use in-game.
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* ''VideoGame/TheLordOfTheRingsOnline'' has sets of armor, sets of jewlery, and sets that are a mix of both. However, some class-specific armor sets have a bonus for all six pieces, such as a 10% chance of instantly cooling down an ability .
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* ''VideoGame/TheLordOfTheRingsOnline'' has sets of armor, sets of jewlery, and sets that are a mix of both. However, some class-specific armor sets have a bonus for all six pieces, such as a 10% chance of instantly cooling down an ability .ability.
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Examples of {{Set Bonus}}es in VideoGames.
* In ''VideoGame/TwentyXX'', you get a special ability for acquiring the four Core Augments of a given set: Dracopent (primary weapon DPS) makes all your attacks charged by default, Armatort (durability) makes you immune to damage caused by a lot of stage hazards, Owlhawk (power DPS) gives all of your powers special bonus effects (Fireshield gets double the number of fireballs, for example), and Oxjack (mobility) gives you a triple air dash.
* In ''VideoGame/{{AdventureQuest}}'', mastercraft items have a set bonus--for example, the Golden set having you heal half the damage you deal on a special attack. These are usually synched with the abilities of the items in the set. For example, the Golden set was meant for durability, hence the healing, Another notable example would be the Awe set, which gives you the ability to stun your target on an attack, which when combined with it's other StoneWall properties, would give you more chances to turn on [[OneHitKO Power Word Die]] which had a 1% chance. Most others just enhance one of the set's items with higher rates or an added effect.
* In ''VideoGame/AnimalCrossing'', you get bonus points for your HRA score by collecting pieces of furniture sets, themes, and series.
* ''VideoGame/AssassinsCreedOdyssey''has a number of Legendary tiered armor sets that have a special bonus activate when worn together. Notably, each armor set is divided among members of the various branches of the AncientConspiracy you're fighting, so taking out an entire branch is required to complete the set(which helpfully upgrades all parts of the set to the current level as well).
* In ''VideoGame/BillyVsSNAKEMAN'', some teams of allies have extra bonuses on top of individual ally bonuses. Wearing all three pieces of a cosplay set during [[UnexpectedGameplayChange BillyCon]] gives you that set's "combo", a fourth cosplay piece for all intents and purposes.
* In ''VideoGame/TheBindingOfIsaac'': ''[[ExpansionPack Wrath of the Lamb]]'', acquiring 3 out of 4 specific cat-related items[[note]]these being Guppy's Tail, Guppy's Head, Guppy's Paw and Dead Cat.[[/note]] in a single playthrough will [[spoiler:transform Isaac into his deceased cat, Guppy]]. Not only it makes you look [[LethalJokeCharacter hilarious]] / [[BadassAdorable adorable]], but it grants you [[spoiler:the abilities to [[IBelieveICanFly fly]] and [[MookMaker spawn blue flies]] whenever you hit enemies]]. Needless to say, it is an incredibly nifty bonus.
** In the remake, The Binding of Isaac: Rebirth, and its expansions (Afterbirth and Afterbirth+), there are more of these introduced, on top of the returning Guppy transformation (Whose pool of items has been expanded a bit with Guppy's Collar and Guppy's Hair Ball), although the most unique of these has to be Super Bum, which doesn't transform Isaac himself, but rather has the Bum Friend, Dark Bum and Key Bum perform a FusionDance. This particular transformation doubles the rewards for each Bum. You can find a full list of transformations in Rebirth and its expansions [[https://bindingofisaacrebirth.gamepedia.com/Transformations here.]]
* Guns in ''VideoGame/Borderlands2'' and ''VideoGame/BorderlandsThePreSequel'' work like this. All guns consist of a body which determines the manufacturer of the gun as a whole, and several other parts which affect its stats. These parts each have their own manufacturer as well. For example, a pistol with a Bandit barrel gets a boost to damage but its accuracy is lower. However, if the manufacturer of a part matches the manufacturer of the body, the gun gets an additional bonus. For example, a pistol with matching barrel gets a boost to damage, which means a Bandit pistol with a Bandit barrel gets its damage boosted twice over. This ends up being the bane of [[MinMaxing min-maxers]] who want the best possible equipment for their character, since its not enough to farm a boss over and over until they finally give you their rare drop, you have to farm multiple copies of that rare drop until you get one with as many matching parts as possible.
** The Commander Lilith DLC of 2 introduces the Effervescent gear rarity, several of which have bonuses when used together in certain locations. For example: the Hard Carry relic, the Easy Mode shield and the Peak Opener rifle all have effects that only activate when equipped while in the [[PeninsulaOfPowerLeveling Digistruct Peak]] map.
* ''VideoGame/CastlevaniaSymphonyOfTheNight'' has the Alucar'''t''' items (not to be confused with the powerful Alucar'''d''' items that you start the game with and [[ATasteOfPower quickly have stolen from you]]): the Alucart Sword, Shield, and Mail. On their own, they have pitiful stats and no special properties. Equip them all at once and they grant you +30 [[LuckStat LCK]], greatly increasing the chances of critical hits and [[RareDrop rare drop]]s.
* ''VideoGame/ChronoCross'' - collecting a special set of equipment for Pierre turns him from JokeCharacter to LethalJokeCharacter.
* This is the idea of set bonuses for the Invention Origin Enhancements in ''VideoGame/CityOfHeroes''. A character can only have one of each part of the set in a single power and with each piece added another stat bonus is unlocked. These bonuses are special in that they affect all powers on that character and each bonus can be stacked up to five times as it is possible to use most sets in multiple powers. It is also possible to use more two or three partial sets in the same power in order to create all sorts of set bonus mixes (though usually the best bonuses require having most or all pieces of one set.)
** Further on in the game, as more and more sets became available, partial sets became the norm rather than the exception: using two or three sets which maximized as many stats as possible (and, preferably, gave the ever-coveted +Recharge Rate or +Defense).
* Item (particularly, armor) sets in ''VideoGame/DiabloII'' and ''VideoGame/DiabloIII'' give you set bonuses if you wear some or all of them at once.
** ''Diablo III'' has a special ring whose sole purpose is to reduce the number of items needed to activate the different bonuses for a set, allowing players to mix and match sets.
* In the ''Franchise/{{Disgaea}}'' series, items have a specific "set" number, which determines if the item will be a common, a rare, or a legendary (lowest numbers=legendary). Equipping two or more items with the same number boosts the effectiveness of those items, with the boost getting progressively larger the more items match.
* ''VideoGame/{{Dislyte}}'': Equipping all items part of a Relic Set (4 for a 4-Piece/UNA set, 2 for a 2-Piece/MUI set) on an Esper will grant them a bonus depending on the Relic Set in question. For example, ''War Machine'' increases the attack stat by 30% while ''Wind Walker'' will increase speed by 25%.
* ''VideoGame/DissidiaFinalFantasy'' has a lot of these. Many equipment items have a property that, if you have three (or, in some cases, four) items with the same property equipped, you get a bonus effect.
* In ''VideoGame/DotaUnderlords'', having multiple heroes that belong to the same alliance will trigger some kind of special bonus. For example, Assassins gain a chance to perform a CriticalHit, and Primordials spawn an Eidolon when they die. In most cases, the more different heroes you have, the stronger the bonus.
* Armor in ''Franchise/DragonAge'' gives additional bonuses if it forms a matching set.
** Certain weapon combos do the same, such as Maric's Sword and Cailan's Shield. Most fall into that sword-and-board type, but the expansion ''[[VideoGame/DragonAgeOriginsAwakening Awakening]]'' offers up a sword and dagger set bonus for dual wielders.
** Certain rings also provide additional benefits when paired together.
** ''VideoGame/DragonAgeII'' has an armor set for Hawke to be collected for every chapter of the game, and one in both DLC campaigns. The final act 3 set is Hawke's iconic Champion Armor.
* ''VideoGame/DragonQuestVII'' and ''VideoGame/DragonQuestV'' uses this during the Style Contests in Litorud. Matching certain weapons, armor and accessories together (like [[PlayboyBunny Bunny Ears, Bunny Suit, Fishnet Stockings, and a Silver Tray]], all-Zenithian gear or the Boxer Shorts and Pot Lid and nothing else) gives you bonus points for coordination.
* In ''VideoGame/{{Drakensang}}'', as part of the plot you have to collect all the parts of the Fire Armor (which is, helm, gloves, boots, greaves, armor, shield and InfinityPlusOneSword. The last one depends on the main character's WeaponOfChoice).
* ''VideoGame/DynastyWarriorsGundam'' gives stat bonuses for equipping parts made by the same inventor, and special skills for equipping multiples of the same part type.
* ''Franchise/TheElderScrolls'':
** In-universe, it is implied that [[OurDwarvesAreDifferent Dwemer/Dwarven]] armor works like this, or at least used to work like this. The Dwemer were an [[SchizoTech extremely technologically advanced]] race of {{Naytheist}}s, whose many creations include MechaMooks of all shapes and sizes (right up to full blown {{Humongous Mecha}}s). According to some theories, what modern people know as "Dwemer armor" is actually the mechanical exoskeleton of their most advanced "animunculi". A humanoid wearer can be encased within, where it seals and basically becomes a sort of PowerArmor. However, since their [[RiddleForTheAges disappearance]], whatever their intended purpose, modern peoples wear the pieces as quality heavy armor. (A quest-reward perk in ''Skyrim'' is meant to provide such a bonus in-game, but [[GoodBadBugs actually just gives you a permanent armor bonus whatever you're wearing]].)
** In ''[[VideoGame/TheElderScrollsVSkyrim Skyrim]]'', the Heavy Armor and Light Armor perk trees each have a perk that provides a large boost to your Armor Rating for wearing four pieces of Heavy or Light Armor respectively, as well as a second perk that provides ''another'' large boost if those four pieces make up a matching set. In the ''Dragonborn'' [=DLC=], the enchantments on each piece of the Deathbrand armor set become stronger if you wear the other pieces of the set. The enchantments on the scimitars Bloodscythe and Soulrender become stronger if they are wielded together. This also complements the Deathbrand set nicely, since the Deathbrand Gauntlets increase damage done by dual wielding weapons.
** ''Videogame/TheElderScrollsOnline'''s endgame equipment is all about getting the best sets for your role. Although most of them give bonus stats if some of their pieces are worn together, having all of them usually grants a unique effect, like a chance to summon a floating sword to do damage for you or turning your UnnecessaryCombatRoll into an actual RollingAttack.
* In ''VideoGame/{{Elsword}}'', there are a few different types of sets. Upgraded equipment (with a purple name) and Secret Dungeon equipment (with a tan/"gold" name), most costumes (save for the earlier sets), and some accessories all receive set bonuses dependent on how many pieces you wear, usually a decent stat bonus but also some specialty effects, such as reduced damage from certain enemies or even an extra level to certain skills.
* ''VideoGame/EnterTheGungeon'' uses a downplayed version with Synergy bonuses. Most items in the game gain a bonus effect if you're also holding an item that triggers the Synergy bonus, although many of them only work for one item and not the other. Some of these bring even mediocre guns into GameBreaker territory. [[spoiler:And The Gunslinger's starting item automatically gives every gun all its Synergy bonuses.]]
* ''VideoGame/FinalFantasyXI'' has two different kinds of set bonuses. The first and by far the most common type requires that all pieces of a particular set be equipped in order to get the effect, which for the most part isn't worth it, though the Usukane Haramaki set is fantastically powerful for Monks and Puppetmasters, and the full Perle Hauberk set is good for Dragoons and Dark Knights. The second type, used only in Campaign armour, allows for a partial bonus if two or more pieces of the set are equipped. Unfortunately, Campaign armour is so underpowered that even this doesn't make it useful. RainbowPimpGear still rules the day for the majority of jobs. This has changed in later addons, as armor from Ambuscade, for example, also have the cumulative bonuses for each piece of armor after the first and are rather powerful pieces.
* ''VideoGame/{{Flyff}}'' had the green items (which were not green, but had their name in green). Usually people would only wear green items because their bonuses and the amount of time you could use them was far greater than the normal items. Of course they were also really expensive.
* ''VideoGame/FortuneStreet'' is similar in nature to ''Monopoly''. Collecting all of the same color command tiles results in a 50% increase in all of the tiles in that color's value. It also showed up in ''VideoGame/KingdomHeartsBirthBySleep'' has a minigame called Command Board.
* Having three matching viviosaurs of a set on your team in ''VideoGame/FossilFighters'' is necessary for using their team attacks. What makes a set varies, but it can be things like similar styles, diets, or elements.
%%* ''[[Website/GaiaOnline zOMG]]'': ring sets.
* Artifacts in ''VideoGame/GenshinImpact'' tend to come in sets of five. Equipping two of the same set grants you one bonus while four of the same set garners a second bonus.
* ''VideoGame/GrimDawn'': Epic and Legendary items can form sets similar to the Diablo model. Some sets grant new skills for having the full set, such as the Oathbreaker set giving a chance to shoot a fireball in place of a normal attack.
* ''VideoGame/GuildWars2'' has runes, which gives set bonuses when you apply them to your current armor. They come as minor runes (two bonuses if two are applied to your armor), major runes (four bonuses if four are applied to your armor) and superior runes (six bonuses if six are applied to your armor). Unlike most SetBonus examples however, you can just get one set bonus with only one rune. You will still need a full set to get all of the bonuses, however.
* In ''Videogame/HandOfFate'', the Skeleton King Ring and Dragon Ring grant effects if and only if all other items from their respective sets are equipped.
* Expansion packs to ''VideoGame/HeroesOfMightAndMagic III'' introduced these, as certain sets of items when equipped result in [[GameBreaker absurdly powerful]] bonuses. In fact, two of the campaigns in Shadow of Death revolve around [[MacGuffinDeliveryService gathering those]]... for the BigBad. Another campaign revolves around ''splitting'' one. The campaign that ties all of the stories together revolves around the heroes' efforts to reunite the divided set to counter the ones owned by the BigBad.
** The initial concept of the 'combination artifacts' was introduced in the expansion to Heroes ''II''. The main difference -- and why it counts as less this trope than the Heroes III ones -- was that the combination was ''irreversible'' (in terms of gameplay, if not the story). Of course, storywise it is still a sword, an armor and a helmet, it just takes up a single inventory slot instead of three and grants the powers of all three artifacts (and an additional bonus).
* If you wear all the pieces of a costume in ''VideoGame/HungrySharkWorld'', then you'll get a strong bonus that's often related to the costume's theme. For example, if you wear all the parts of the bunny outfit - it'll cause your pets to grow to large size. Individual parts of the bunny outfit will give your shark a bonus to bite damage.
* In ''VideoGame/HyperLightDrifter'' this is {{Inverted}}. Finding the corpse of a fallen warrior rewards the Drifter with the whole set of equipment at once: their [[AllEncompassingMantle cloak]], [[LaserBlade sword]] and [[RobotBuddy drone]]. All give the same beneficial effect, but it does not stack, so it is better to mix items from three different sets.
* Outfits in ''VideoGame/KingdomOfLoathing'' often have extra effects. For example, the [=eXtreme=] Cold-Weather Gear gives you a big boost to cold resistance, while the Clockwork Apparatus causes you to gain a beneficial effect instead of taking damage if you fumble a basic attack. To get the outfit bonus, you must be wearing every piece of the outfit. This also brings with it a change in your avatar.
* ''KingdomsOfCamelot'' on Facebook has a full set bonus now that the last of the four Guardians has been released. Only one Guardian can be active at a time, but unlocking all four gives the player a bonus, likely either resources or items for use in-game.
* ''Franchise/TheLegendOfZelda'':
** The ''Zelda'' series in general has the three parts of the Triforce. They are three magical artifacts which were created by the 3 Goddesses themselves. Each fragment supposedly contains the essence of the goddess that created it: Power, Wisdom and Courage. When all three parts are combined, it forms a completed Triforce which will grant the wish of the first person to touch it. However, if that person has an unequal balance of Power, Wisdom or Courage, they will only receive the essence they value most (Ganondorf treasured Power, so that's all he got). The other two parts will then seek out champions which most exemplify the other two traits (Zelda has Wisdom and Link has Courage) to defend itself. It's only when all of the champions have been defeated (or willingly surrender their Triforce piece) that the complete Triforce will reappear and the wish can finally be granted.
** ''VideoGame/TheLegendOfZeldaTwilightPrincess'': The Fused Shadows. Individually, each fragment holds a dark power that can warp the mind of whoever comes in contact with them. However, it is only when the four are combined that their true power can be called forth.
** ''VideoGame/TheLegendOfZeldaBreathOfTheWild'':
*** Certain sets of armor provide set bonus effects when you wear all parts; for instance, the Stealth set will boost your maximum running speed at night, while armor that gives resistance to a certain type of damage (such as heat, fire, or cold) will give full immunity to it instead. Most need you to upgrade them twice from the Great Fairies beforehand.
*** Combining multiple food types with the same buff will yield a stronger result than using multiple items of the same type. For example, a dish made with multiple ingredients with the "mighty" prefix, which boosts attack power, will give a larger attack boost than a dish made with only one.
* ''VideoGame/TheLordOfTheRingsOnline'' has sets of armor, sets of jewlery, and sets that are a mix of both. However, some class-specific armor sets have a bonus for all six pieces, such as a 10% chance of instantly cooling down an ability .
* ''[[VideoGame/MagicalVacation Magical Starsign]]'' features several sets that grant special skills once the full ensemble is equipped i.e the Cat set greatly increments agility, the Winged set allows the wearing to always act first in battle, and the Cash set increases money won from battles by 30%.
* ''VideoGame/MagicRampage'': Using items with the same magic-type incur damage bonuses.
* ''VideoGame/MarvelUltimateAlliance'' gave bonuses depending on who was in your party, usually if they were part of a team like ComicBook/TheAvengers or the ComicBook/FantasticFour. Or if you group up people with similar traits, like the "[[YouFightLikeACow Please Stop Talking!]]" group.
* ''Franchise/MegaMan''
** ''VideoGame/MegaManX'''s armor system in ''VideoGame/MegaManX8'' allows him to interchange parts between the two armors, Icarus and Hermes. However, if he instead equips a complete set, a special ability of that armor will be available for use: Icarus comes with the series' trademark [[SmartBomb Giga Attack]], while Hermes has the [[HourOfPower X-Drive]], increasing the capabilities of the Hermes armor further.
** The Junk Armor in ''VideoGame/MegaManZero4'' comes in three pieces: head, body and legs. Only when Zero equips all three parts should the armor's ability be in effect: [[GlassCannon doubling his attack power while halving his defense]].
* In ''VideoGame/MonsterBoyAndTheCursedKingdom'' every single piece of equipment belongs to a set, with a special bonus provided if you're wearing the fully upgraded complete set. Ironically doing this can actually render the intended [[InfinityPlusOneSword Infinity Plus One equipment]] second class, as another set has a far more useful stat ability.
* ''VideoGame/MonsterHunter'' has every set of armor only provide bonus skills and resistances when the full 5-piece set is worn--or at least combined with equipment that gives similar skills. Later installments change this up by requiring only a few pieces from a set, but not all.
* A minor example, but in the second ''VideoGame/NeverwinterNights'' Expansion, Hordes of the Underdark, if you can find and equip all of Lord Nasher's lost equipment, they each become far more powerful.
* ''[[VideoGame/{{Onmyoji}} Onmyōji]]'': Equipping a ''[[{{Mon}} shikigami]]'' with two similar ''mitama'' gives a great boost in a certain stats, while four of the same type gives special effect unique to each type.
* In ''[[VideoGame/PokemonGoldAndSilver Pokemon HeartGold and SoulSilver]]'', depending on their version, the player gets an item that lets them capture either Kyogre or Groudon. Regardless of which one they caught, however, Oak's reaction is to state that he thinks of the pair as a set, and wonders if you can capture the other one. However, [[OneGameForThePriceOfTwo you can only capture one of the pair in each version]] -- and [[GuideDangIt the next event won't be triggered by any]] ''[[GuideDangIt normal]]'' [[GuideDangIt Groudon/Kyogre]] -- you ''specifically'' need one who was lured in and caught by the exclusive HG/SS item.
** There's also Plusle and Minun (and in later games, a handful of other Electric-types), who get a stat boost when they're paired together in a Double Battle.
* ''VideoGame/RatchetAndClankSizeMatters'' has armor pieces that can be discovered while playing through the levels. Collecting and equipping a matching set confers an additional bonus, such as adding acid or fire to your melee attacks. There are also certain other armor groups that are combinations of armor pieces from different sets, so it also averts this trope. In fact, the best armor combo, [[http://ratchet.wikia.com/wiki/Stalker_Armor Stalker Armor]], is an aversion, since it's made from the Wildfire Helmet, Chameleon Body Armor and Boots, and Sludge Mk. 9 Gloves, and grants ''96%'' damage reduction.
* You get a one-time bonus in ''VideoGame/RiseOfNations'''s Conquer-The-Entire-World campaign for controlling a complete continent.
* ''VideoGame/RuneScape'' uses this a lot. There are certain sets of clothing that boost the amount of experience you gain in skills. Wearing the entire set will raise the boost above just the sum of its parts. Additionally, certain armour sets will grant boosts to your combat stats, or grant access to special attacks, but only if every piece is worn.
* The Seven Chaos Emeralds in nearly all ''VideoGame/SonicTheHedgehog'' games; which are usually valuable to the player only when they are all collected. Originally, [[PlotCoupon collecting them]] unlocked the GoodEnding, and in later games the TrueFinalBoss. They became very notable during the end of the classic era, when collecting all seven bestowed a SuperMode on Sonic or an ally during actual gameplay (''VideoGame/Sonic3AndKnuckles'' had the Super Emeralds -- collecting all of ''those'' induced an even greater Super Mode). Individually, they rarely serve as anything more important than a PlotCoupon, maybe they might even allow for CutscenePowerToTheMax, but in terms of functional gameplay, nada. The exception is Chaos Control, a teleportation technique that requires possession of at least one Chaos Emerald, though [[GameplayAndStorySegregation this rule isn't consistently followed in gameplay]].
* ''VideoGame/StarTrekOnline'' has a number of item sets that follow this trope. All but one consist of three items (from September 2012 onward. Before there had been a four-item set), with the exception consisting of two items (several ''list'' four items, but this is because Romulan Singularity Cores and Warpcores are mutually exclusive and can only be used on specific ships, so any core-including set has to have both as alternatives). Generally one power is added when two items are combined, and a second when three are combined (some sets also grant an additional power at that point if used on the right ship).
* In ''VideoGame/SuperMarioBros3'', using two warp whistles at once (that is, using a warp whistle while already in the Warp Zone) takes you directly to World 8, the final world.
* ''VideoGame/TacticsOgre'' also used the set equipment variant, usually giving the character a lesser weight penalty.
* ''VideoGame/TeamFortress2'' used these, with one for every class but TheEngineer. They were quite blatant RevenueEnhancingDevices, being difficult to [[ItemCrafting craft in game]] and being offered in a bundle for a discount. The second wave of sets didn't require the themed hat to get the bonus, so they are more feasible to collect without spending real money. As of the July 10, 2013 update, however, the original eight sets no longer affect gameplay, changing this from set bonus to a CosmeticAward which leave [[CallingCard specialized markers]] whenever you get a kill while using them.
** This was parodied by the "Dual-Purpose Fruit" set, of which one component is actually a long existing item, as the effect is "Reduces the chance of hunger by 13%". [[MetaphoricallyTrue 0 is in fact equal to 87% of 0.]]
** An unusual version that's just barely not a CosmeticAward: the promotional items from ''VideoGame/AlienIsolation'' include a set of items for the Pyro which, together, make his primary weapon ''specifically'' more damaging to Scout's wearing the other item set (a Xenomorph costume) at the cost of taking more melee damage from them. This basically lets people with each set cosplay at [[Film/{{Alien}} Ripley and the Alien]] without affecting anyone else.
* ''VideoGame/{{Terraria}}'' features multiple sets of armor made out of various different materials. If you wear a complete set of armor made out of a single type of material (all iron armor, all [[MeteoricIron meteor]] armor, all {{mythril}} armor, etc.), then you get a set bonus. The mid-to-late game armors generally have some very nice set bonuses on them, such as extra melee power, more mana, or increased movement speed. Even in the early game, it's generally better to wear a complete set of armor made from one material (i.e. a full set of copper armor is better than if you had two pieces of copper armor and one piece of iron). With the introduction of hardmode and its new materials, each set of armor made from those materials has three different headpieces you can pick from, each of which will improve your skills with either melee combat, ranged weapons, or magic.
* In ''VideoGame/TitanQuest'' you can find certain items that, just like in Diablo, can form a set and give you bonuses if you wear more and more of them. They can be both blue (rare) and on Epic and Legendary, Purple (mythic). Plus, certain item sets works better on certain classes. Last but not least, thanks to the Caravans from the Expansion is possible to pass parts of these sets to other player. In short, is easier to collect all the sets and give them to the most suitable character.
* Certain armor in ''VideoGame/{{Torchlight}}'' does this. It actually tells you a) that it's in a set, b) the name of the set, and c) what bonuses you'll get for getting more pieces.
* In ''VideoGame/{{Toukiden}}'', equipping a matched suit of armour (usually items sharing a name) will grant passive bonuses, such as extra health or elemental damage resistance. In addition, equipping Mitama[[note]]Sprits of people devoured by the Oni, and later liberated[[/note]] that were related to one another in life (say, spouses, siblings, or even just people from the same era) will grant bonuses.
* The ''VideoGame/{{Ultima}}'' games have a long history of this, particularly [[VideoGame/UltimaVIIPartII Serpent Isle]] which could be completed only by assembling the full Serpent Armor.
* ''{{VideoGame/Valheim}}'': Different armor sets have different effects, like the Root et increasing bow skill but slowing you down, the Fenris set increasing move speed and unarmed damage, the Troll set making you sneakier, etc.
* In ''VideoGame/{{Vindictus}}'', each armor suit has a couple of stats that increase incrementally as you put on more pieces, on top of the bonus the pieces themselves give you. This is why you will rarely see a ''Vindictus'' player wearing [[RainbowPimpGear mix-and-match armor]].
* ''VideoGame/{{Warframe}}'' has some mods come in sets. Set mods give a bonus whose efficiency is multiplied by the number of mods in the set you currently have equipped, encouraging you to equip more of that set's mods.
* ''VideoGame/TheWitcher3WildHunt'' has a number of custom armor sets called Witcher Gear you can obtain. While each set is designed around amplifying different types of damage (Cat empathizes light attacks, Bear empathizes heavy attacks, etc), there are stat bonuses for having 3 and 6 pieces of a given armor set equipped.
* In ''VideoGame/TheWorldEndsWithYou'', many "Gatito" brand pins only function in battle if the player can collect all the pins in a set. The "Darklit Planets" set (comprising six pins) is an exception as each ''can'' be used individually, but they power up significantly if the player has all six. [[GuideDangIt Which is no easy task]], [[BraggingRightsReward and involves beating the]] BonusBoss [[HarderThanHard on the highest difficulty]].
* ''VideoGame/WorldOfWarcraft'' has an armor set for each class for each tier or season for both [[PlayerVersusPlayer PVP]] and PVE. That's a lot of sets.
** There are also sets you can craft, and sets that can get dropped. There are also sets of 2 items, 3 items, 4 items, etc... including one set that's nothing but two one-handed weapons.
** Used to be played straight with ''World Of Warcraft'''s item sets which grant increasing bonuses the more items from a given set are equipped. Downplayed nowadays so that people would actually have a choice of equipment; a typical set has 5 parts with bonuses awarded for 2 and 4 matching items, while before the Burning Crusade expansion sets had 8 parts and all were required to get the best bonus.
* ''VideoGame/{{Wynncraft}}'': Predictably, [[ExactlyWhatItSaysOnTheTin Set items]] give this. The player can still receive some buffs even if they are only wearing at least two items from a set, although it is a small bonus compared to wearing a full set. A good example of this is the Morph set, which gives the player a small XP and Loot bonus as long as they are wearing two items from the set, but wearing the full set vastly improves those bonuses and gives the player a 15-point increase to all of their stats.
* In ''VideoGame/TwentyXX'', you get a special ability for acquiring the four Core Augments of a given set: Dracopent (primary weapon DPS) makes all your attacks charged by default, Armatort (durability) makes you immune to damage caused by a lot of stage hazards, Owlhawk (power DPS) gives all of your powers special bonus effects (Fireshield gets double the number of fireballs, for example), and Oxjack (mobility) gives you a triple air dash.
* In ''VideoGame/{{AdventureQuest}}'', mastercraft items have a set bonus--for example, the Golden set having you heal half the damage you deal on a special attack. These are usually synched with the abilities of the items in the set. For example, the Golden set was meant for durability, hence the healing, Another notable example would be the Awe set, which gives you the ability to stun your target on an attack, which when combined with it's other StoneWall properties, would give you more chances to turn on [[OneHitKO Power Word Die]] which had a 1% chance. Most others just enhance one of the set's items with higher rates or an added effect.
* In ''VideoGame/AnimalCrossing'', you get bonus points for your HRA score by collecting pieces of furniture sets, themes, and series.
* ''VideoGame/AssassinsCreedOdyssey''has a number of Legendary tiered armor sets that have a special bonus activate when worn together. Notably, each armor set is divided among members of the various branches of the AncientConspiracy you're fighting, so taking out an entire branch is required to complete the set(which helpfully upgrades all parts of the set to the current level as well).
* In ''VideoGame/BillyVsSNAKEMAN'', some teams of allies have extra bonuses on top of individual ally bonuses. Wearing all three pieces of a cosplay set during [[UnexpectedGameplayChange BillyCon]] gives you that set's "combo", a fourth cosplay piece for all intents and purposes.
* In ''VideoGame/TheBindingOfIsaac'': ''[[ExpansionPack Wrath of the Lamb]]'', acquiring 3 out of 4 specific cat-related items[[note]]these being Guppy's Tail, Guppy's Head, Guppy's Paw and Dead Cat.[[/note]] in a single playthrough will [[spoiler:transform Isaac into his deceased cat, Guppy]]. Not only it makes you look [[LethalJokeCharacter hilarious]] / [[BadassAdorable adorable]], but it grants you [[spoiler:the abilities to [[IBelieveICanFly fly]] and [[MookMaker spawn blue flies]] whenever you hit enemies]]. Needless to say, it is an incredibly nifty bonus.
** In the remake, The Binding of Isaac: Rebirth, and its expansions (Afterbirth and Afterbirth+), there are more of these introduced, on top of the returning Guppy transformation (Whose pool of items has been expanded a bit with Guppy's Collar and Guppy's Hair Ball), although the most unique of these has to be Super Bum, which doesn't transform Isaac himself, but rather has the Bum Friend, Dark Bum and Key Bum perform a FusionDance. This particular transformation doubles the rewards for each Bum. You can find a full list of transformations in Rebirth and its expansions [[https://bindingofisaacrebirth.gamepedia.com/Transformations here.]]
* Guns in ''VideoGame/Borderlands2'' and ''VideoGame/BorderlandsThePreSequel'' work like this. All guns consist of a body which determines the manufacturer of the gun as a whole, and several other parts which affect its stats. These parts each have their own manufacturer as well. For example, a pistol with a Bandit barrel gets a boost to damage but its accuracy is lower. However, if the manufacturer of a part matches the manufacturer of the body, the gun gets an additional bonus. For example, a pistol with matching barrel gets a boost to damage, which means a Bandit pistol with a Bandit barrel gets its damage boosted twice over. This ends up being the bane of [[MinMaxing min-maxers]] who want the best possible equipment for their character, since its not enough to farm a boss over and over until they finally give you their rare drop, you have to farm multiple copies of that rare drop until you get one with as many matching parts as possible.
** The Commander Lilith DLC of 2 introduces the Effervescent gear rarity, several of which have bonuses when used together in certain locations. For example: the Hard Carry relic, the Easy Mode shield and the Peak Opener rifle all have effects that only activate when equipped while in the [[PeninsulaOfPowerLeveling Digistruct Peak]] map.
* ''VideoGame/CastlevaniaSymphonyOfTheNight'' has the Alucar'''t''' items (not to be confused with the powerful Alucar'''d''' items that you start the game with and [[ATasteOfPower quickly have stolen from you]]): the Alucart Sword, Shield, and Mail. On their own, they have pitiful stats and no special properties. Equip them all at once and they grant you +30 [[LuckStat LCK]], greatly increasing the chances of critical hits and [[RareDrop rare drop]]s.
* ''VideoGame/ChronoCross'' - collecting a special set of equipment for Pierre turns him from JokeCharacter to LethalJokeCharacter.
* This is the idea of set bonuses for the Invention Origin Enhancements in ''VideoGame/CityOfHeroes''. A character can only have one of each part of the set in a single power and with each piece added another stat bonus is unlocked. These bonuses are special in that they affect all powers on that character and each bonus can be stacked up to five times as it is possible to use most sets in multiple powers. It is also possible to use more two or three partial sets in the same power in order to create all sorts of set bonus mixes (though usually the best bonuses require having most or all pieces of one set.)
** Further on in the game, as more and more sets became available, partial sets became the norm rather than the exception: using two or three sets which maximized as many stats as possible (and, preferably, gave the ever-coveted +Recharge Rate or +Defense).
* Item (particularly, armor) sets in ''VideoGame/DiabloII'' and ''VideoGame/DiabloIII'' give you set bonuses if you wear some or all of them at once.
** ''Diablo III'' has a special ring whose sole purpose is to reduce the number of items needed to activate the different bonuses for a set, allowing players to mix and match sets.
* In the ''Franchise/{{Disgaea}}'' series, items have a specific "set" number, which determines if the item will be a common, a rare, or a legendary (lowest numbers=legendary). Equipping two or more items with the same number boosts the effectiveness of those items, with the boost getting progressively larger the more items match.
* ''VideoGame/{{Dislyte}}'': Equipping all items part of a Relic Set (4 for a 4-Piece/UNA set, 2 for a 2-Piece/MUI set) on an Esper will grant them a bonus depending on the Relic Set in question. For example, ''War Machine'' increases the attack stat by 30% while ''Wind Walker'' will increase speed by 25%.
* ''VideoGame/DissidiaFinalFantasy'' has a lot of these. Many equipment items have a property that, if you have three (or, in some cases, four) items with the same property equipped, you get a bonus effect.
* In ''VideoGame/DotaUnderlords'', having multiple heroes that belong to the same alliance will trigger some kind of special bonus. For example, Assassins gain a chance to perform a CriticalHit, and Primordials spawn an Eidolon when they die. In most cases, the more different heroes you have, the stronger the bonus.
* Armor in ''Franchise/DragonAge'' gives additional bonuses if it forms a matching set.
** Certain weapon combos do the same, such as Maric's Sword and Cailan's Shield. Most fall into that sword-and-board type, but the expansion ''[[VideoGame/DragonAgeOriginsAwakening Awakening]]'' offers up a sword and dagger set bonus for dual wielders.
** Certain rings also provide additional benefits when paired together.
** ''VideoGame/DragonAgeII'' has an armor set for Hawke to be collected for every chapter of the game, and one in both DLC campaigns. The final act 3 set is Hawke's iconic Champion Armor.
* ''VideoGame/DragonQuestVII'' and ''VideoGame/DragonQuestV'' uses this during the Style Contests in Litorud. Matching certain weapons, armor and accessories together (like [[PlayboyBunny Bunny Ears, Bunny Suit, Fishnet Stockings, and a Silver Tray]], all-Zenithian gear or the Boxer Shorts and Pot Lid and nothing else) gives you bonus points for coordination.
* In ''VideoGame/{{Drakensang}}'', as part of the plot you have to collect all the parts of the Fire Armor (which is, helm, gloves, boots, greaves, armor, shield and InfinityPlusOneSword. The last one depends on the main character's WeaponOfChoice).
* ''VideoGame/DynastyWarriorsGundam'' gives stat bonuses for equipping parts made by the same inventor, and special skills for equipping multiples of the same part type.
* ''Franchise/TheElderScrolls'':
** In-universe, it is implied that [[OurDwarvesAreDifferent Dwemer/Dwarven]] armor works like this, or at least used to work like this. The Dwemer were an [[SchizoTech extremely technologically advanced]] race of {{Naytheist}}s, whose many creations include MechaMooks of all shapes and sizes (right up to full blown {{Humongous Mecha}}s). According to some theories, what modern people know as "Dwemer armor" is actually the mechanical exoskeleton of their most advanced "animunculi". A humanoid wearer can be encased within, where it seals and basically becomes a sort of PowerArmor. However, since their [[RiddleForTheAges disappearance]], whatever their intended purpose, modern peoples wear the pieces as quality heavy armor. (A quest-reward perk in ''Skyrim'' is meant to provide such a bonus in-game, but [[GoodBadBugs actually just gives you a permanent armor bonus whatever you're wearing]].)
** In ''[[VideoGame/TheElderScrollsVSkyrim Skyrim]]'', the Heavy Armor and Light Armor perk trees each have a perk that provides a large boost to your Armor Rating for wearing four pieces of Heavy or Light Armor respectively, as well as a second perk that provides ''another'' large boost if those four pieces make up a matching set. In the ''Dragonborn'' [=DLC=], the enchantments on each piece of the Deathbrand armor set become stronger if you wear the other pieces of the set. The enchantments on the scimitars Bloodscythe and Soulrender become stronger if they are wielded together. This also complements the Deathbrand set nicely, since the Deathbrand Gauntlets increase damage done by dual wielding weapons.
** ''Videogame/TheElderScrollsOnline'''s endgame equipment is all about getting the best sets for your role. Although most of them give bonus stats if some of their pieces are worn together, having all of them usually grants a unique effect, like a chance to summon a floating sword to do damage for you or turning your UnnecessaryCombatRoll into an actual RollingAttack.
* In ''VideoGame/{{Elsword}}'', there are a few different types of sets. Upgraded equipment (with a purple name) and Secret Dungeon equipment (with a tan/"gold" name), most costumes (save for the earlier sets), and some accessories all receive set bonuses dependent on how many pieces you wear, usually a decent stat bonus but also some specialty effects, such as reduced damage from certain enemies or even an extra level to certain skills.
* ''VideoGame/EnterTheGungeon'' uses a downplayed version with Synergy bonuses. Most items in the game gain a bonus effect if you're also holding an item that triggers the Synergy bonus, although many of them only work for one item and not the other. Some of these bring even mediocre guns into GameBreaker territory. [[spoiler:And The Gunslinger's starting item automatically gives every gun all its Synergy bonuses.]]
* ''VideoGame/FinalFantasyXI'' has two different kinds of set bonuses. The first and by far the most common type requires that all pieces of a particular set be equipped in order to get the effect, which for the most part isn't worth it, though the Usukane Haramaki set is fantastically powerful for Monks and Puppetmasters, and the full Perle Hauberk set is good for Dragoons and Dark Knights. The second type, used only in Campaign armour, allows for a partial bonus if two or more pieces of the set are equipped. Unfortunately, Campaign armour is so underpowered that even this doesn't make it useful. RainbowPimpGear still rules the day for the majority of jobs. This has changed in later addons, as armor from Ambuscade, for example, also have the cumulative bonuses for each piece of armor after the first and are rather powerful pieces.
* ''VideoGame/{{Flyff}}'' had the green items (which were not green, but had their name in green). Usually people would only wear green items because their bonuses and the amount of time you could use them was far greater than the normal items. Of course they were also really expensive.
* ''VideoGame/FortuneStreet'' is similar in nature to ''Monopoly''. Collecting all of the same color command tiles results in a 50% increase in all of the tiles in that color's value. It also showed up in ''VideoGame/KingdomHeartsBirthBySleep'' has a minigame called Command Board.
* Having three matching viviosaurs of a set on your team in ''VideoGame/FossilFighters'' is necessary for using their team attacks. What makes a set varies, but it can be things like similar styles, diets, or elements.
%%* ''[[Website/GaiaOnline zOMG]]'': ring sets.
* Artifacts in ''VideoGame/GenshinImpact'' tend to come in sets of five. Equipping two of the same set grants you one bonus while four of the same set garners a second bonus.
* ''VideoGame/GrimDawn'': Epic and Legendary items can form sets similar to the Diablo model. Some sets grant new skills for having the full set, such as the Oathbreaker set giving a chance to shoot a fireball in place of a normal attack.
* ''VideoGame/GuildWars2'' has runes, which gives set bonuses when you apply them to your current armor. They come as minor runes (two bonuses if two are applied to your armor), major runes (four bonuses if four are applied to your armor) and superior runes (six bonuses if six are applied to your armor). Unlike most SetBonus examples however, you can just get one set bonus with only one rune. You will still need a full set to get all of the bonuses, however.
* In ''Videogame/HandOfFate'', the Skeleton King Ring and Dragon Ring grant effects if and only if all other items from their respective sets are equipped.
* Expansion packs to ''VideoGame/HeroesOfMightAndMagic III'' introduced these, as certain sets of items when equipped result in [[GameBreaker absurdly powerful]] bonuses. In fact, two of the campaigns in Shadow of Death revolve around [[MacGuffinDeliveryService gathering those]]... for the BigBad. Another campaign revolves around ''splitting'' one. The campaign that ties all of the stories together revolves around the heroes' efforts to reunite the divided set to counter the ones owned by the BigBad.
** The initial concept of the 'combination artifacts' was introduced in the expansion to Heroes ''II''. The main difference -- and why it counts as less this trope than the Heroes III ones -- was that the combination was ''irreversible'' (in terms of gameplay, if not the story). Of course, storywise it is still a sword, an armor and a helmet, it just takes up a single inventory slot instead of three and grants the powers of all three artifacts (and an additional bonus).
* If you wear all the pieces of a costume in ''VideoGame/HungrySharkWorld'', then you'll get a strong bonus that's often related to the costume's theme. For example, if you wear all the parts of the bunny outfit - it'll cause your pets to grow to large size. Individual parts of the bunny outfit will give your shark a bonus to bite damage.
* In ''VideoGame/HyperLightDrifter'' this is {{Inverted}}. Finding the corpse of a fallen warrior rewards the Drifter with the whole set of equipment at once: their [[AllEncompassingMantle cloak]], [[LaserBlade sword]] and [[RobotBuddy drone]]. All give the same beneficial effect, but it does not stack, so it is better to mix items from three different sets.
* Outfits in ''VideoGame/KingdomOfLoathing'' often have extra effects. For example, the [=eXtreme=] Cold-Weather Gear gives you a big boost to cold resistance, while the Clockwork Apparatus causes you to gain a beneficial effect instead of taking damage if you fumble a basic attack. To get the outfit bonus, you must be wearing every piece of the outfit. This also brings with it a change in your avatar.
* ''KingdomsOfCamelot'' on Facebook has a full set bonus now that the last of the four Guardians has been released. Only one Guardian can be active at a time, but unlocking all four gives the player a bonus, likely either resources or items for use in-game.
* ''Franchise/TheLegendOfZelda'':
** The ''Zelda'' series in general has the three parts of the Triforce. They are three magical artifacts which were created by the 3 Goddesses themselves. Each fragment supposedly contains the essence of the goddess that created it: Power, Wisdom and Courage. When all three parts are combined, it forms a completed Triforce which will grant the wish of the first person to touch it. However, if that person has an unequal balance of Power, Wisdom or Courage, they will only receive the essence they value most (Ganondorf treasured Power, so that's all he got). The other two parts will then seek out champions which most exemplify the other two traits (Zelda has Wisdom and Link has Courage) to defend itself. It's only when all of the champions have been defeated (or willingly surrender their Triforce piece) that the complete Triforce will reappear and the wish can finally be granted.
** ''VideoGame/TheLegendOfZeldaTwilightPrincess'': The Fused Shadows. Individually, each fragment holds a dark power that can warp the mind of whoever comes in contact with them. However, it is only when the four are combined that their true power can be called forth.
** ''VideoGame/TheLegendOfZeldaBreathOfTheWild'':
*** Certain sets of armor provide set bonus effects when you wear all parts; for instance, the Stealth set will boost your maximum running speed at night, while armor that gives resistance to a certain type of damage (such as heat, fire, or cold) will give full immunity to it instead. Most need you to upgrade them twice from the Great Fairies beforehand.
*** Combining multiple food types with the same buff will yield a stronger result than using multiple items of the same type. For example, a dish made with multiple ingredients with the "mighty" prefix, which boosts attack power, will give a larger attack boost than a dish made with only one.
* ''VideoGame/TheLordOfTheRingsOnline'' has sets of armor, sets of jewlery, and sets that are a mix of both. However, some class-specific armor sets have a bonus for all six pieces, such as a 10% chance of instantly cooling down an ability .
* ''[[VideoGame/MagicalVacation Magical Starsign]]'' features several sets that grant special skills once the full ensemble is equipped i.e the Cat set greatly increments agility, the Winged set allows the wearing to always act first in battle, and the Cash set increases money won from battles by 30%.
* ''VideoGame/MagicRampage'': Using items with the same magic-type incur damage bonuses.
* ''VideoGame/MarvelUltimateAlliance'' gave bonuses depending on who was in your party, usually if they were part of a team like ComicBook/TheAvengers or the ComicBook/FantasticFour. Or if you group up people with similar traits, like the "[[YouFightLikeACow Please Stop Talking!]]" group.
* ''Franchise/MegaMan''
** ''VideoGame/MegaManX'''s armor system in ''VideoGame/MegaManX8'' allows him to interchange parts between the two armors, Icarus and Hermes. However, if he instead equips a complete set, a special ability of that armor will be available for use: Icarus comes with the series' trademark [[SmartBomb Giga Attack]], while Hermes has the [[HourOfPower X-Drive]], increasing the capabilities of the Hermes armor further.
** The Junk Armor in ''VideoGame/MegaManZero4'' comes in three pieces: head, body and legs. Only when Zero equips all three parts should the armor's ability be in effect: [[GlassCannon doubling his attack power while halving his defense]].
* In ''VideoGame/MonsterBoyAndTheCursedKingdom'' every single piece of equipment belongs to a set, with a special bonus provided if you're wearing the fully upgraded complete set. Ironically doing this can actually render the intended [[InfinityPlusOneSword Infinity Plus One equipment]] second class, as another set has a far more useful stat ability.
* ''VideoGame/MonsterHunter'' has every set of armor only provide bonus skills and resistances when the full 5-piece set is worn--or at least combined with equipment that gives similar skills. Later installments change this up by requiring only a few pieces from a set, but not all.
* A minor example, but in the second ''VideoGame/NeverwinterNights'' Expansion, Hordes of the Underdark, if you can find and equip all of Lord Nasher's lost equipment, they each become far more powerful.
* ''[[VideoGame/{{Onmyoji}} Onmyōji]]'': Equipping a ''[[{{Mon}} shikigami]]'' with two similar ''mitama'' gives a great boost in a certain stats, while four of the same type gives special effect unique to each type.
* In ''[[VideoGame/PokemonGoldAndSilver Pokemon HeartGold and SoulSilver]]'', depending on their version, the player gets an item that lets them capture either Kyogre or Groudon. Regardless of which one they caught, however, Oak's reaction is to state that he thinks of the pair as a set, and wonders if you can capture the other one. However, [[OneGameForThePriceOfTwo you can only capture one of the pair in each version]] -- and [[GuideDangIt the next event won't be triggered by any]] ''[[GuideDangIt normal]]'' [[GuideDangIt Groudon/Kyogre]] -- you ''specifically'' need one who was lured in and caught by the exclusive HG/SS item.
** There's also Plusle and Minun (and in later games, a handful of other Electric-types), who get a stat boost when they're paired together in a Double Battle.
* ''VideoGame/RatchetAndClankSizeMatters'' has armor pieces that can be discovered while playing through the levels. Collecting and equipping a matching set confers an additional bonus, such as adding acid or fire to your melee attacks. There are also certain other armor groups that are combinations of armor pieces from different sets, so it also averts this trope. In fact, the best armor combo, [[http://ratchet.wikia.com/wiki/Stalker_Armor Stalker Armor]], is an aversion, since it's made from the Wildfire Helmet, Chameleon Body Armor and Boots, and Sludge Mk. 9 Gloves, and grants ''96%'' damage reduction.
* You get a one-time bonus in ''VideoGame/RiseOfNations'''s Conquer-The-Entire-World campaign for controlling a complete continent.
* ''VideoGame/RuneScape'' uses this a lot. There are certain sets of clothing that boost the amount of experience you gain in skills. Wearing the entire set will raise the boost above just the sum of its parts. Additionally, certain armour sets will grant boosts to your combat stats, or grant access to special attacks, but only if every piece is worn.
* The Seven Chaos Emeralds in nearly all ''VideoGame/SonicTheHedgehog'' games; which are usually valuable to the player only when they are all collected. Originally, [[PlotCoupon collecting them]] unlocked the GoodEnding, and in later games the TrueFinalBoss. They became very notable during the end of the classic era, when collecting all seven bestowed a SuperMode on Sonic or an ally during actual gameplay (''VideoGame/Sonic3AndKnuckles'' had the Super Emeralds -- collecting all of ''those'' induced an even greater Super Mode). Individually, they rarely serve as anything more important than a PlotCoupon, maybe they might even allow for CutscenePowerToTheMax, but in terms of functional gameplay, nada. The exception is Chaos Control, a teleportation technique that requires possession of at least one Chaos Emerald, though [[GameplayAndStorySegregation this rule isn't consistently followed in gameplay]].
* ''VideoGame/StarTrekOnline'' has a number of item sets that follow this trope. All but one consist of three items (from September 2012 onward. Before there had been a four-item set), with the exception consisting of two items (several ''list'' four items, but this is because Romulan Singularity Cores and Warpcores are mutually exclusive and can only be used on specific ships, so any core-including set has to have both as alternatives). Generally one power is added when two items are combined, and a second when three are combined (some sets also grant an additional power at that point if used on the right ship).
* In ''VideoGame/SuperMarioBros3'', using two warp whistles at once (that is, using a warp whistle while already in the Warp Zone) takes you directly to World 8, the final world.
* ''VideoGame/TacticsOgre'' also used the set equipment variant, usually giving the character a lesser weight penalty.
* ''VideoGame/TeamFortress2'' used these, with one for every class but TheEngineer. They were quite blatant RevenueEnhancingDevices, being difficult to [[ItemCrafting craft in game]] and being offered in a bundle for a discount. The second wave of sets didn't require the themed hat to get the bonus, so they are more feasible to collect without spending real money. As of the July 10, 2013 update, however, the original eight sets no longer affect gameplay, changing this from set bonus to a CosmeticAward which leave [[CallingCard specialized markers]] whenever you get a kill while using them.
** This was parodied by the "Dual-Purpose Fruit" set, of which one component is actually a long existing item, as the effect is "Reduces the chance of hunger by 13%". [[MetaphoricallyTrue 0 is in fact equal to 87% of 0.]]
** An unusual version that's just barely not a CosmeticAward: the promotional items from ''VideoGame/AlienIsolation'' include a set of items for the Pyro which, together, make his primary weapon ''specifically'' more damaging to Scout's wearing the other item set (a Xenomorph costume) at the cost of taking more melee damage from them. This basically lets people with each set cosplay at [[Film/{{Alien}} Ripley and the Alien]] without affecting anyone else.
* ''VideoGame/{{Terraria}}'' features multiple sets of armor made out of various different materials. If you wear a complete set of armor made out of a single type of material (all iron armor, all [[MeteoricIron meteor]] armor, all {{mythril}} armor, etc.), then you get a set bonus. The mid-to-late game armors generally have some very nice set bonuses on them, such as extra melee power, more mana, or increased movement speed. Even in the early game, it's generally better to wear a complete set of armor made from one material (i.e. a full set of copper armor is better than if you had two pieces of copper armor and one piece of iron). With the introduction of hardmode and its new materials, each set of armor made from those materials has three different headpieces you can pick from, each of which will improve your skills with either melee combat, ranged weapons, or magic.
* In ''VideoGame/TitanQuest'' you can find certain items that, just like in Diablo, can form a set and give you bonuses if you wear more and more of them. They can be both blue (rare) and on Epic and Legendary, Purple (mythic). Plus, certain item sets works better on certain classes. Last but not least, thanks to the Caravans from the Expansion is possible to pass parts of these sets to other player. In short, is easier to collect all the sets and give them to the most suitable character.
* Certain armor in ''VideoGame/{{Torchlight}}'' does this. It actually tells you a) that it's in a set, b) the name of the set, and c) what bonuses you'll get for getting more pieces.
* In ''VideoGame/{{Toukiden}}'', equipping a matched suit of armour (usually items sharing a name) will grant passive bonuses, such as extra health or elemental damage resistance. In addition, equipping Mitama[[note]]Sprits of people devoured by the Oni, and later liberated[[/note]] that were related to one another in life (say, spouses, siblings, or even just people from the same era) will grant bonuses.
* The ''VideoGame/{{Ultima}}'' games have a long history of this, particularly [[VideoGame/UltimaVIIPartII Serpent Isle]] which could be completed only by assembling the full Serpent Armor.
* ''{{VideoGame/Valheim}}'': Different armor sets have different effects, like the Root et increasing bow skill but slowing you down, the Fenris set increasing move speed and unarmed damage, the Troll set making you sneakier, etc.
* In ''VideoGame/{{Vindictus}}'', each armor suit has a couple of stats that increase incrementally as you put on more pieces, on top of the bonus the pieces themselves give you. This is why you will rarely see a ''Vindictus'' player wearing [[RainbowPimpGear mix-and-match armor]].
* ''VideoGame/{{Warframe}}'' has some mods come in sets. Set mods give a bonus whose efficiency is multiplied by the number of mods in the set you currently have equipped, encouraging you to equip more of that set's mods.
* ''VideoGame/TheWitcher3WildHunt'' has a number of custom armor sets called Witcher Gear you can obtain. While each set is designed around amplifying different types of damage (Cat empathizes light attacks, Bear empathizes heavy attacks, etc), there are stat bonuses for having 3 and 6 pieces of a given armor set equipped.
* In ''VideoGame/TheWorldEndsWithYou'', many "Gatito" brand pins only function in battle if the player can collect all the pins in a set. The "Darklit Planets" set (comprising six pins) is an exception as each ''can'' be used individually, but they power up significantly if the player has all six. [[GuideDangIt Which is no easy task]], [[BraggingRightsReward and involves beating the]] BonusBoss [[HarderThanHard on the highest difficulty]].
* ''VideoGame/WorldOfWarcraft'' has an armor set for each class for each tier or season for both [[PlayerVersusPlayer PVP]] and PVE. That's a lot of sets.
** There are also sets you can craft, and sets that can get dropped. There are also sets of 2 items, 3 items, 4 items, etc... including one set that's nothing but two one-handed weapons.
** Used to be played straight with ''World Of Warcraft'''s item sets which grant increasing bonuses the more items from a given set are equipped. Downplayed nowadays so that people would actually have a choice of equipment; a typical set has 5 parts with bonuses awarded for 2 and 4 matching items, while before the Burning Crusade expansion sets had 8 parts and all were required to get the best bonus.
* ''VideoGame/{{Wynncraft}}'': Predictably, [[ExactlyWhatItSaysOnTheTin Set items]] give this. The player can still receive some buffs even if they are only wearing at least two items from a set, although it is a small bonus compared to wearing a full set. A good example of this is the Morph set, which gives the player a small XP and Loot bonus as long as they are wearing two items from the set, but wearing the full set vastly improves those bonuses and gives the player a 15-point increase to all of their stats.
