Balan Wonderworld is a 3D platform game developed by Balan Company and Arzest, published by Square Enix and directed by Yuji Naka, the creator of the Sonic the Hedgehog series. Balan Wonderworld follows two characters, Leo Craig and Emma Cole, as they follow the maestro Balan through the Wonderworld, a setting described as a mix of an imaginary world and reality. Over 80 different collectible costumes give different abilities to the player character (dominantly portrayed as animalistic characters)

Balan Wonderworld was released for Windows, Nintendo Switch, PlayStation 4, PlayStation 5, Xbox One, and Xbox Series X/S on March 26, 2021. The game received generally negative reviews and underperformed commercially. It is widely considered to be one of the worst games of the year 2021 and is potentially among the worst 3D platformers of all time.

The Game was considered a spiritual successor to the NiGHTS and Billy Hatcher series. Shortly after the game's release, Naka left Square Enix.