[[quoteright:240:[[VideoGame/FireEmblemElibe http://static.tvtropes.org/pmwiki/pub/images/monsterarena.png]]]]
->''The slowly acting poison will be given to the favourite one\\
The dark horse will bring glory to the jailor and his men\\
It's always much more sporting when there's families in the pit\\
And the madness of the crowd is in an epileptic fit\\
In The Coliseum\\
In The Coliseum\\
In The Coliseum tonight.''
-->-- '''Music/TomWaits''', "In the Coliseum"

Arena, often in the first or second big city visitable, where the party can fight slightly more advanced monsters at their leisure. To make the fights more challenging sometimes [[FakeDifficulty certain parameters]] are added to the battle requirements (beat opponent in X seconds, cannot use special commands, etc.). The game usually forces the player to try their hand at it once. In theory, many games allow you to play as many battles as you want, although some are extremely difficult until much later in the game... unless you have a DiscOneNuke.

As such an area could be prone to LevelGrinding, some games do not give experience in the MonsterArena, although you might still earn items, an EvolvingAttack, or a LimitBreak this way. It also regularily houses a game's {{Bonus Boss}}. Of course, some games include it specifically as a place to level grind.

Sometimes this is taken in a completely different direction - the monster arena is actually an "arena for monsters"; in other words, your party doesn't fight in there - instead, a group of monsters allied to you does the fighting. Whether or not you have direct control over them varies with the game.

A popular area for the InevitableTournament. If this is completely optional, expect to find yourself getting SidetrackedByTheGoldSaucer.

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!!Examples:

[[foldercontrol]]

[[folder: Action Adventure ]]

* Several ''Franchise/{{Castlevania}}'' games feature this in addition to BossRush:
** ''VideoGame/CastlevaniaCircleOfTheMoon'' has the Battle Arena, where you are to fight a LOT of enemies (most of them are beefed up versions of existing enemies) without MP. You can leave prematurely if it's too hard for you, but you only get the reward if you complete the entire thing successfully. Oh, and there's a GoodBadBug to circumvent the no-MP thing...
** ''VideoGame/CastlevaniaPortraitOfRuin'' has the Nest of Evil, which is a slightly watered-down version of [=CotM=]'s Battle Arena. Still not an easy feat though as there are {{boss fight}}s for every sixth room, but at least you are allowed to go back to SavePoint after each boss fight.
** The Large Cavern in ''VideoGame/CastlevaniaOrderOfEcclesia''. Do ''not'' enter without Volaticus and a large stock of Super Potions.
** ''VideoGame/CastlevaniaCurseOfDarkness'' feature '''two''' of these, with the second one being accessible only after you complete the first one.

[[/folder]]

[[folder: Action Game ]]

* There was an arena in most towns in ''VideoGame/{{Bomberman}} Tournament'' for fighting your [[{{Mons}} Pokémon rip-offs]] against random opponents.

[[/folder]]

[[folder: Beat Em Up ]]

* Appears in ''GodHand'', which has the "Fighting Arena", containing optional difficult fights for a one-time reward, with more fights unlocking as you proceed in the story.
* ''VideoGame/GuardianHeroes'' has one of these accessible early on in the game, with incredibly strong foes within.

[[/folder]]

[[folder: First Person Shooter ]]

* ''VideoGame/{{Borderlands}}'' had one of these as its second {{DLC}}.

[[/folder]]

[[folder: Hack And Slash ]]

* ''VideoGame/DevilMayCry 2'', ''Devil May Cry 3: Special Edition'' and ''Devil May Cry 4'' have a feature known as "Bloody Palace" where one can choose to go up different levels of difficulty, facing hordes of common demons with bosses at regular intervals.
* ''VideoGame/{{Bayonetta}}'', like DevilMayCry, has the Lost Chapter, except that you'll be seeing a RecurringBoss ''being constantly thrown in as mini-boss.'' (for the record, you probably will fight said mini-boss almost 10 times during the entire run)
* ''VideoGame/TheWonderful101'', like {{Bayonetta}}, has Operation 101. It's an arena with endless waves of enemies coming at you. It takes about an hour to finish.

[[/folder]]

[[folder: MMORP Gs ]]

* The Colosseum in ''VideoGame/FinalFantasyXI'' is one of the second type of arena; you create pet monsters to fight it out in a process involving [[FirstPersonSnapshooter soul-draining cameras]].
* ''VideoGame/{{World of Warcraft}}'' has the Argent Coliseum, a PlayerVersusEnvironment dungeon set up like an arena tournament. It houses both a 5-man and a raid instance.
** There are also several quest chains in which a party faces a sequence of strong monsters in an arena, as well as an arena segment in Blackrock Depths that pits you against one of several possible bosses.

[[/folder]]

[[folder: Platform Game ]]

* There are a number of Monster Arenas in the ''VideoGame/{{Kirby}}'' series of games, notably the BossRush from ''Kirby Super Star''.
* The ''VideoGame/RatchetAndClank'' series is full of these.

[[/folder]]

[[folder: Role Playing Game ]]

* ''VideoGame/FinalFantasyVI'' lets you gamble items in the Dragon's Neck Coliseum. This involves having one of your characters fighting a monster ''while acting randomly''. Have fun.
* It's the norm for each ''Franchise/TalesSeries'' game to have one of these, and it's generally where you'll encounter [[ContinuityCameo the cameo characters]] from previous Tales games.
** The Colosseum from ''VideoGame/TalesOfSymphonia'' had individual challenges (where you took on the enemies with one character) and party matches (with only three members). Most characters' best weapons and armour were earned in the Colosseum, though there they all still each get an InfinityPlusOneSword from the BonusBoss.
* The ''DragonQuest'' series features literal Monster Arenas; that is, ones where only monsters fight. In the early games, you just bet tokens on which monster you think will win a battle. ''VideoGame/DragonQuestVIII'' re-introduces the ability to recruit monsters, so you can have a team of your own monsters fight through tournaments against teams lead by other characters, even unlocking the ability to summon your monster team for a few turns in any battle.
* Aptly enough, the Imperial Arena from ''VideoGame/TheElderScrollsIVOblivion''. However, you fight sentient opponents until you reach the rank of Grand Champion, when it becomes an actual MonsterArena by pitting you against creatures of your choice, [[JustifiedTrope justified]] because the fact that you're Grand Champion makes you the best fighter in the arena if not all of Cyrodiil and no other combatants can compete with you yet.
* Battle Square from ''VideoGame/FinalFantasyVII'' makes you [[FakeDifficulty fight alone without healing between battles.]]
* The {{Roguelike}} game ''Omega'' has a gladiatoral arena where gladiators can battle various opponents.
* In ''VideoGame/RuneFactory 2'', in the second generation, you can build a Dojo. As you defeat monsters, you are given harder groups of monsters to fight, plus a reward for beating the last group. This provides a safe place to train, as defeat puts you in the clinic, rather than killing you (which normally happens outside of town). Unfortunately, you cannot get item drops from the monsters in the Dojo.
* The Imperial Arena in ''VideoGame/JadeEmpire'', it also has the BonusBoss at the end.
* Solomon's trials in ''VideoGame/ShadowHearts: Covenant'' and Lovecraft's pit fights in ''Shadow Hearts: From the New World'' offer some of the best items in the games as prizes.
* ''VideoGame/FinalFantasyIX'' has a monster arena in Treno, housed in the local weapon shop. A series of four EliteMook monsters can be fought here at various points in the game.
* The aptly named Monster Arena in ''VideoGame/FinalFantasyX''.
* The Hades Colosseum and Olympus Colosseum from ''KingdomHearts''.
** The Olympus Colosseum was entirely composed of this in the first ''VideoGame/KingdomHearts''. It wasn't until ''VideoGame/KingdomHeartsII'' (or ''VideoGame/KingdomHeartsChainOfMemories'' if you want to be picky) that it became a full-fledged world.
** ''VideoGame/KingdomHeartsBirthBySleep'' also has the Mirage Arena, which is available from early in the game (it also has the obligatory Olympus visit, but all the tournaments are at Mirage).
* ''VideoGame/PaperMarioTheThousandYearDoor'' has the Glitz Pit, a wrestling ring.
* Though separate from the main game, both ''VideoGame/GoldenSun'' games feature a Battle Mode, where players could theoretically pit three members of their party against those of a linked player or, more commonly, engage in sequential battle against random selections of ''every'' monster that save file had encountered during the game. Including bosses. You could stop between any battle, however only your longest streak of wins is recorded.
* The ''VideoGame/ChronoTrigger'' remake for the DS has a special Monster Arena where you train a monster by sending it off into the eras you have reached. 8 minutes of game-play time later, it returns with its abilities enhanced or changed. At any time you can battle your monster against various Tiers - the harder the Tier, the better in game item you are given if you win.
* ''VideoGame/ChronoCross'' also has the "arena for monsters" version.
** It also has the 'normal' version at the Bend of Time
* Arenas appear in ''[[VideoGame/WildArms1 Wild ARMs]]'' and its remake, ''Alter Code F'', as well as in ''VideoGame/{{Wild ARMs 3}}'' and ''VideoGame/{{Wild ARMs 4}}''.
* The Arena from ''VideoGame/{{Fable|I}}'' and The Crucible from ''VideoGame/FableII''. Both of which are [[InevitableTournament part of the main plot.]]
** ''Fable II'' also has The Colosseum, an optional quest where the player has to kill as many progressively harder monsters as they can within a time limit.
* ''DungeonSiege II'' has an arena hidden below Aman'lu inn.
* ''NeverwinterNights2: Mask of the Betrayer'' has golem arena (arena for monsters type), which you construct golem to fight using various parts you collected from places in the game. The final battle gives you the option of [[KickTheDog betting for the proprietors soul]]
* Features prominately in ''VideoGame/MountAndBlade.'' Every city has one, and it is a place to et experience and money. Every enemy, there, however, is human.
* ''Franchise/{{Pokemon}}''. There's the Battle Towers in ''Crystal'', ''Ruby and Sapphire'', and ''Diamond and Pearl'', the Battle Frontiers in ''Emerald'', ''Platinum'', and ''[=HeartGold=]'' and ''[=SoulSilver=]'', the Battle Subway in ''Black and White'', the Battle Maison in ''X and Y'', and of course the Colosseums in ''Colosseum'' and ''Gale of Darkness''. Out of these, only the Colosseums reward experience, though other rewards are given in the other facilities.
* ''{{Mardek}} 2'' has the optional (and somewhat hard to enter) Trilobyte Arena, which ends with the QuirkyMinibossSquad making a return.
** The third chapter has another one, along with shorter ones for each one of your party members.
* ''VideoGame/FalloutNewVegas'' has The Thorn, where the player can fight monsters of the wasteland or bet on fights. The player can also get a quest where they collect monster eggs for the chance to sleep with the owner of the arena as well as a unique weapon.
* ''VideoGame/StarOceanTheLastHope'' has an arena with solo and party matches. It uses a ranking system where you can choose your opponent and after defeating enough opponents, you'll advance in rank and be able to challenge stronger foes. The solo arena is notable for the fact that each member of your party is ranked separately, meaning that if you plan on getting their battle trophies for becoming the arena champ, you'll inevitably have to have them fight each another at some point.
* Some monsters in ''VideoGame/MonsterHunter 3'' and its expansions are fought in a special Arena battelfield. There's also an underwater version to fight aquatic monsters.

[[/folder]]

[[folder: Tabletop Games ]]

* At the start of ''DarkSun: Shattered Lands'', your party is comprised of gladiator slaves, periodically forced to fight in a colosseum. You're soon given a way to escape, but the game allows you to grind in the colosseum as long as you want for gold and xp, first. Of course, it soon encourages you to get on with the story, by releasing overpowered monsters because, since most gladiators don't survive that long, you're ''clearly'' awesome enough to handle them.

[[/folder]]

[[folder: Turn Based Strategy ]]

* The entire premise of ''{{Gladius}}''.
* Colosseums in ''FireEmblem'' apparently only open their doors when there is a skirmish going on outside, as there is no way to use them between battles.
** While these colosseums did not exist in ''[[VideoGame/FireEmblemTellius Fire Emblem: Path of Radiance]]'', it is revealed in that game that King Ashnard determined the ranks of his army based on who could survive a fight against a feral Laguz, making it a better example of a ''Monster'' Arena.
* While it's not an arena ''per se,'' the Item World in ''Franchise/{{Disgaea}}'' probably qualifies. In addition to being one of the best level grinding spots, it's also the source of some of the game's best items and the only place you'll find teal [[GeoEffects geo panels.]]
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