Originally, Sonic Generations was intended to get a release for the Wii and PSP, but since they couldn't handle the graphics, The Wii version was turned into Colors, while the PSP version became the 3DS release. The PSP version was leaked but the disc was beyond repair.

Submission by: @SA1REMASTERED
Source Link: https://forums.sonicretro.org/index.php?threads/sonic-generations-psp-potentially-found.36780/

I find funny how i posted this at the beggining of the month and it's getting attention at the end of the month