Fun Facts!

Early on in the game's life on the Xbox 360 there was a glitch where you could get your character to level 256 however at some point the glitch was patched, due to the patch characters that were at that level were set to level 99 with all their stats reset, the only way to acess the glitch nowadays is via exploits which is not recommended as it might break your game and/or get you banned

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The game was originally being developed for the Gamecube before being moved to the Xbox 360 (check the beta/alpha/prototype section for images and videos of this version of the game)

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The minigame All You Can Quaff has 2 unused food items: pudding/gravy (no official name but it has been said to be one of the 2 by Dan Paladin) and a fish, the pudding is special in the sense that it still technically shows up in game but only for a few seconds before disappearing (second image)

(images from the Castle Crashers Wiki)

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before Castle Crashers Remastered released the Steam version of Castle Crashers had All You Can Quaff as it's main minigame meaning that the Steam version was most likely a modified port of the Xbox 360 version

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There is an unused animation of a shark eating a deer which can be viewed on the Spriters Resource, this was probably gonna be used in the catfish level

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Castle Crashers being put on the Switch in 2019 was the first time any game by The Behemoth had been put on a Nintendo console since 2004

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Castle Crashers' physical Switch release in November 2023 was the first time The Behemoth had released one of their games physically since 2007 albeit not on as big of a scale due to the copies only being sold online and at conventions