Boogie is a music game developed by Electronic Arts for the Wii in 2006 / 2007. Being touted as a party-game, it enables players to create their character, then use the Wii Remote and a microphone to sing and dance through it. [Info from Wikipedia]
In the gallery below we can see a photo from an early prototype of the game, when the graphic style and the engine were not finished yet. Also in the concept arts there are various characters that were never implemented in the final version, as an early concept for the party freak, abandoned because it was to similar to a Pikmin. At some point the team was thinking of having plush toys for the characters, and even vynil toys. Eventually, they evolved toward more traditional 2D animated monsters, slightly reminiscent of Lilo and Stitch.
Thanks a lot to Stephan for the contribution!