Castle Crashers is a side-scrolling beat-em-up that incorporates a small number
of role-playing video game elements. After selecting a character, the
player then selects a starting stage through an overworld map. After completing a stage, the player has the choice to revisit it or to move to another stage. The map also displays shops where the player character can buy items and weaponry using coins gained from defeated foes. Arena stages can be unlocked where the player character can take on challenges to unlock additional characters.
Castle Crashers supports cooperative gameplay for up to four
players, either locally or online. The game progression in terms of what
stages are unlocked is defined by the hosting player; however, each
player character will gain experience points and acquire wealth,
weapons, and animal orbs independently as they progress
with the rest of the party. In each stage, the player can use melee and
combination attacks. Each character has a unique magical ability in
order to defeat foes and a health meter that, if drained from enemy
attacks, will cause the character to fall in battle. In single player mode, this ends the stage; however, in cooperative multiplayer other players may attempt to revive the downed character.
Characters gain experience points by defeating foes which allow the
character to level up. Each level gained allows the player to allocate
points towards the character's four basic combat attributes. Certain
level advances also grant new combination attacks. Progress is tracked
for each of the playable characters separately. The character's magic
level is also tracked by a meter and regenerates over time. Numerous
weapons can be found in the game, each that have various effects to the
character's attributes when equipped. The player can find animal companions for their character that may assist in battle, improve the character's attributes, or provide another special
ability such as increased treasure earned from defeated foes. Each
version of the game features two minigames. In Arena, the first
minigame, player characters attempt to survive through several waves of
enemies. This minigame is available on both console versions. The Xbox
360 version features All You Can Quaff, a button-mashing contest between
all characters to attempt to eat as much food as possible.The
PlayStation 3 version features a Volleyball minigame for up to four players and four AI characters.
