is a compilation of classic SEGA titles originally released for PlayStation 2, Xbox, and PC. This guide covers how to unlock hidden games and use classic cheats. Unlocking Hidden Games
Up, Down, Left, Right (chime), then hold Square/X and Start. Sonic Mega Collection Plus
Play Sonic 2 and Sonic Spinball 20 times. is a compilation of classic SEGA titles originally
Play Blue Sphere , Knuckles in Sonic 2 , Sonic 3 & Knuckles , and Flicky 30 times each. Knuckles in Sonic 2