History GoodBadBugs / SimulationGame

** The game does not check for a specific character at a store counter, only that there ''is'' a character. So if Alex isn't working at the ice cream stall, you can park your horse there and it will sell you ice cream.

* Most ''VideoGame/HarvestMoon'' games tend to have at least two or three bugs each -- though this has become rarer since ''VideoGame/HarvestMoonTreeOfTranquility''. These are usually among the annoying kind, but a few fit in this category. Among them:

** ''HM 1'''s Love glitch: The game's eligible brides will like you more when you talk to them every day, but talking to them more than once in a day won't do anything... in theory. Actually, if you walk out of her house, then back in, it counts as a new day. Pretty much mandatory for getting the best ending, which requires you to have a wife and a kid... [[WithThisHerring within three years]].
** ''[[VideoGame/{{Harvest Moon 64}} HM 64]]'''s Horse Betting glitch: If you place your bets with the Mayor's wife, then exit instead of confirming, the bets will go through, but the money won't be taken out of your wallet, allowing you to bet on the horse race for free.

** ''[[VideoGame/HarvestMoonDS HM DS]]'''s 1 Billion Gold glitch: Hiring the Fishing Sprites during Winter, then shipping junk items (items that ship for 1G each) during a day when they're working for you will set your money level to 1 Billion. There's a chance doing this will invoke a GameBreakingBug that will corrupt your save file, make this option a [[DeathOrGloryAttack Death or Glory Bug.]]

** The [[VideoGame/HarvestMoonNatsume Natsume-made game]] ''Harvest Moon: Seed Of Memories'' had a glitch in the mobile version where you could [[GayOption marry the same gender]]. Unfortunately, it was eventually patched out.

* ''VideoGame/IWasATeenageExocolonist'': Until the November 15, 2022 patch update fixed them, StatusEffects that reduced skill gains such as Mourning and Injured did ''not'' reduce them as expected, meaning that your skill gains weren't negatively affected, as if you didn't have them. Despite that, the Starving status still had this bug until the March 16, 2023 patch updated fixed it.

* ''VideoGame/IWasATeenageExocolonist'': Until the November 15, 2022 patch update fixed them, StatusEffects that reduced skill gains such as Mourning and Injured did ''not'' reduce them as expected, meaning that your skill gains weren't negatively affected, as if you didn't have them.

* ''VideoGame/NASCARRacing 2003 Season'':

* From ''VideoGame/HarvestMoon'''s SpiritualSuccessor, ''VideoGame/StardewValley'':
** In early builds of the game, naming a new [=NPC=] after a pre-existing [=NPC=] would cause the new [=NPC=] to adopt their namesake's AI behaviours. It didn't take long for people to get the hilarious idea to [[BestialityIsDepraved name one of their barnyard animals after one of the romance options]].
** More of a developer oversight than a true glitch but prior to Patch 1.06, [[PerkyGoth Abigail]] would appreciatively ask "How did you know I was hungry?" when you gave her an item she liked. This included ''[[ExtremeOmnivore gemstones]]''. Abigail's unusual tastes quickly became subject to MemeticMutation and eventually became an AscendedMeme.
** If the player is married to [[HospitalHottie Maru]], then occasionally she will wear her nurse outfit to bed and say "Shhh! Don't let the doctor see you!" when you try to talk to her. Less sexy is how sometimes when you marry [[EnsembleDarkhorse Shane]], he'll bring ''[[BestialityIsDepraved his chicken]]'' to bed with him.
** It was once possible to plant fruit trees everywhere in the game, including in some interesting places, such as the bathhouse. This got fixed with the 1.1 update, but the same update reverted the previous fix for planting fruit trees inside the greenhouse and outside the dedicated soil area, making it an example of an AscendedGlitch.
** Due to the way the game handles giving the player items, it's possible to [[https://www.youtube.com/watch?v=zWY9mCbkHHA name things with item numbers]], including your farmer, causing the items to spawn in the player's inventory every time the name gets mentioned. In this way, it's possible to get very rare items like the Iridium Sprinkler, Ancient Fruit, Prismatic Shard, etc. every time someone says the player's name. Find an NPC who says the player's name every time you talk to them, and you'll never have to worry about money ever again, [[GameBreaker breaking the game's difficulty in half]]. Version 1.5 added [[NoFairCheating scolding in to the chatbox]] if you do this.
** In a similar vein, the pale green wallpaper somehow shares an item ID code with the Prismatic Shard, the rarest and most valuable gem in the game. So you can instantly befriend everyone except Haley (who hates Prismatic Shards), summon/forge the [[InfinityPlusOneSword Galaxy Sword]], and [[spoiler: ForcedTransformation away unwanted children]]... with a piece of wallpaper. This was eventually patched out.
** Krobus' shop has, as well as its usual itinerary, one item that can only be purchased once per day. However, closing the shop window and then opening it again will allow you to purchase the items again without having to wait.
** The game does not check for a specific character at a store counter, only that there ''is'' a character. So if Alex isn't working at the ice cream stall, you can park your horse there and it will sell you ice cream.

* The Norn genomes in the release version of ''VideoGame/{{Creatures}} 2'' have a flaw in their simulated neurochemistry, so that when a Norn walks into a wall, instead of getting the signal to turn round and walk away, they often continue to walk into the same wall over and over. This habit became known as 'Wallbonking' and is considered a classic Norn trait among the fandom, even though a fixed genome and later games (mostly) eradicated the behaviour.
** This is far from the only problem in the ''Creatures 2'' genome -- the ArtificialStupidity is so rampant, it was dubbed "One Hour Stupidity Syndrome." While many programmers released [[GameMod fixes]] for this which targeted various aspects of the genome, the original genome is still quite funny in a schadenfreude kind of way. After one hour, the bugged genome ensures that your Norn will become incredibly stupid, to the point of total paralysis.
** The "flying lemon" bug in the first ''Creatures'' is fondly remembered by fans. Other flying objects too, like the coconut crab COB.

* ''VideoGame/MonsterRancher Advance 2'' has a {{Good Bad Bug|s}}... that unfortunately [[GameBreakingBug comes with a side-order]] of LaserGuidedKarma. Essentially: At the start of the week, before doing anything else, save your game. Turn it off and on again quickly. If done correctly, your monster will lose Fatigue and Stress points, meaning that, if done repeatedly, they will never tire. The universe's retribution for cheating to train your monster? If done repeatedly, this trick will ''kill the saving on your actual game'' due to its origins as a memory-clearing glitch.
* ''VideoGame/AnimalCrossing: City Folk'' has an oversight in the programming which makes it possible for the player to completely bypass the "normal" methods for getting nearly anything. When you go to someone else's town via wifi and then leave, as you disconnect and Copper wishes you a good day, the player can press the Home button to reset the game. Wifi normally does not let the player use the Home button at all. This allows for cloning items, including money. By having the host save the game, the guest can drop the item in the host's town and then use the oversight to reset the game BEFORE you return to your town, meaning the save when you return will not happen. When you start the game back up, you will have the item in your inventory, and your host will have a copy of that same item. Thus, it's possible for two people teaming up to get as many of a given item as they wish or as much money as they wish, and in this way completely bypass the normal methods of earning money or certain items. This glitch reappears in ''New Leaf'' (and works nearly identically, to boot; it's actually even easier to exploit since all you have to do is flip the 3DS' wireless switch while leaving).
* ''NASCAR Racing 2003 Season'':
** Various quirks in the physics engine can result in some hilarious visuals, anywhere from cars spinning on its front like a top to cars being launched hundreds of feet into the air while visually only at a fraction of its actual height before violently smashing into the ground.
** Unrealistic car setups work well with the original retail version on the faster tracks, to the point that the cars handle more like Indy cars and are somewhere between stock cars and Indy cars in terms of speed.

* Before being patched, in some games of the ''VideoGame/SilentHunter'' franchise, when one destroyer rammed your submarine to sink it (a tactic used in RealLife, [[http://en.wikipedia.org/wiki/HMS_Dreadnought_%281906%29#Career even by a battleship]]) [[https://www.youtube.com/watch?v=qhREnipM8XY the destroyer, not you submarine, went to meet Davy Jones]].
* [[XBeyondTheFrontier X-Tension]] featured an odd AI glitch: if you flew behind an enemy fighter and maintained a close enough distance - below 200 metres - they'd cease all maneuvering and just fly straight, forever. This made most fights cakewalks - aggro an enemy, park yourself on their tail, shoot until desired results achieved.

* In ''[[VideoGame/{{ARMA}} ARMA II]]'', an amusing bug can cause tanks (and presumably other armoured vehicles) to fly. By going to the Armory and selecting Utes as the map, the player should be dropped near an airfield. Driving over the boulders just south of the airstrip's centre will cause the game to freak out and launch your vehicle into the air at high speed. As an added bonus, your choice of tank will be completely unharmed when it lands turret-first at 200 kilometres an hour!
* ''VideoGame/GoatSimulator'' carries this as a selling point. Seriously, it's listed under the Key Features on the Steam Store page: "MILLIONS OF BUGS! We're only eliminating the crash-bugs, everything else is hilarious and we're keeping it." Note that it's still entirely possible to crash the game via glitches: [[RefugeInAudacity this earns you an achievement]].
* In ''VideoGame/ThemePark'' by Bullfrog, if your workers are on strike and picketing outside your park, you can break the strike by simply picking them up and moving them back inside.
* In earlier versions of ''Command: Modern Air and Naval Operations'', it was actually possible for a helicopter door gunner to [[http://forums.sufficientvelocity.com/posts/17461/ sink a submarine]]. This has since been patched out of later versions, however.
* In ''VideoGame/WarThunder'' once after an update players discovered that if a bomber crashed without taking any hit previously, it would get a lot of research points depending on the number of carried bombs. This led many people to bring in-game a bomber with dozens of small bombs and immediately going into a deliberate suicide dive, causing the game feed to be filled with bombers suddenly mass crashing at start. The developers issued an ObviousRulePatch, while also banning for 1 day players who exploited this glitch in order to revert their undue progress.
** More an oversight than a bug: the in-game premium currency, golden eagles, can be either purchased with real money or won for free through wagers, which are difficult but doable tasks, like "win 10 games in a row while killing 3 enemy players". While arcade battles and realistic battles put you into random fights, aircraft simulator battles allow you to open a room and bring your friends. They are free to join the enemy team, and nothing prevents them to give you free kills. This led many people to exploit for years sim battles to farm golden eagles without effort, before the developers removed this possibility.
* Usually, you don't want bugs on a game like ''VideoGame/WorldOfTanks.'' The potential for player abuse is high, and the amount of complaints it would get is often even higher. However, one glitch that persists due to being seemingly impossible to predict or cause on purpose is caused by the server and client desynchronizing, with the client 'catching up' to the server and sometimes having ridiculous results, such as a tank teleports 20 meters to one side without warning, or suddenly spinning violently in place like a top, or doing high-speed reverse donuts. The kicker is that the game remembers these are multi-ton vehicles moving at what are now very high speeds, and it treats them accordingly. It's resulted in some rather amusing, one-of-a-kind situations, such as [[https://www.youtube.com/watch?v=0Kms7X_vbGQ&feature=youtu.be&t=1m10s this incident]] where a tank destroyer is destroyed after it is suddenly roundhouse-kicked by a lagging tank.
* In ''Videogame/FromTheDepths'''s Neter Campaign early days, there was no classification for vehicle movement type (land/sea/air), only its max altitude and max speed. This could lead to jet aircraft being chased across mountain ranges [[UnconventionalVehicleChase by battleships]] on the strategic map, whereupon the start of the battle the ships would spawn several hundred meters in the air and plummet to their doom. Later updates allowed vehicle classification systems so boats won't attempt to cross land and vice versa for tanks, but the class isn't always properly set.
* The Tug-of-War glitch from ''VideoGame/CultistSimulator'', as showed off in [[https://twitter.com/alexiskennedy/status/982292772588834822 this tweet]] announcing its demise. Essentially, if you had only one card of a given type, and two things tried to pull it in (for example, both Inspector Wakefield and one of your reputation-destroying minions competing over a reputation card), instead of one definitively winning, the card would bounce between boxes until one ran out of time.

** In a similar vein, the pale green wallpaper somehow shares an item ID code with the Prismatic Shard, the rarest and most valuable gem in the game. So you can instantly befriend everyone except Haley (who hates Prismatic Shards), summon/forge the [[InfinityPlusOneSword Galaxy Sword]], and [[spoiler: BalefulPolymorph away unwanted children]]... with a piece of wallpaper. This was eventually patched out.

** Due to the way the game handles giving the player items, it's possible to [[https://www.youtube.com/watch?v=zWY9mCbkHHA name things with item numbers]], including your farmer, causing the items to spawn in the player's inventory every time the name gets mentioned. In this way, it's possible to get very rare items like the Iridium Sprinkler, Ancient Fruit, Prismatic Shard, etc. every time someone says the player's name. Find an NPC who says the player's name every time you talk to them, and you'll never have to worry about money ever again, [[GameBreaker breaking the game's difficulty in half]].
** In a similar vein, the pale green wallpaper somehow shares an item ID code with the Prismatic Shard, the rarest and most valuable gem in the game. So you can instantly befriend everyone except Haley (who hates Prismatic Shards), summon/forge the [[InfinityPlusOneSword Galaxy Sword]], and [[spoiler: BalefulPolymorph away unwanted children]]... with a piece of wallpaper.

* ''NASCAR Racing 2003 Season'': Unrealistic car setups work well with the original retail version on the faster tracks, to the point that the cars handle more like Indy cars and are somewhere between stock cars and Indy cars in terms of speed.

*** There is also a glitch where if you use all your stamina and fatigue on the 30th day of the season, your character will go to the clinic and you will start the next day. However, if you still have crops in the field, they will be growing into the next season (including winter, when no crops are suppose to grow) even though they are suppose to be dead. People have used this glitch to grow a whole field full of Pineapple, the most profitable crop in the game. This glitch was so popular that it was brought over to ''VideoGame/StoryOfSeasonsFriendsOfMineralTown'', which is a remake of Friends of Mineral Town.

*** There is also a glitch where if you use all your stamina and fatigue on the 30th day of the season, your character will go to the clinic and you will the rest of the day. However, if you still have crops in the field, they will be growing into the next season (including winter, when no crops are suppose to grow) even though they are suppose to be dead. People have used this glitch to grow a whole field full of Pineapple, the most profitable crop in the game. This glitch was so popular that it was brought over to ''VideoGame/StoryOfSeasonsFriendsOfMineralTown'', which is a remake of Friends of Mineral Town.

** The Natsume-made game ''Harvest Moon: Seed Of Memories'' had a glitch in the mobile version where you could [[GayOption marry the same gender]]. Unfortunately, it was eventually patched out.

* ''VideoGame/GoatSimulator'' carries this as a selling point. Seriously, it's listed under the Key Features on the Steam Store page: "MILLIONS OF BUGS! We're only eliminating the crash-bugs, everything else is hilarious and we're keeping it."

* ''VideoGame/MonsterRancher Advance 2'' has a GoodBadBug... that unfortunately [[GameBreakingBug comes with a side-order]] of LaserGuidedKarma. Essentially: At the start of the week, before doing anything else, save your game. Turn it off and on again quickly. If done correctly, your monster will lose Fatigue and Stress points, meaning that, if done repeatedly, they will never tire. The universe's retribution for cheating to train your monster? If done repeatedly, this trick will ''kill the saving on your actual game,'' due to its origins as a memory-clearing glitch.