Sonic Mega Collection Plus

Sonic Mega Collection Plus is a compilation of Sonic the Hedgehog games, as well as production videos and artwork of other Sonic games, a comic book collection, unlockable games, a save feature, and more...

Seven Sonic games: Three lock-on modes from Sonic & Knuckles: Unlockable Sega Genesis games: Six Sega Game Gear games (not in Sonic Mega Collection) :
 * Sonic the Hedgehog
 * Sonic the Hedgehog 2
 * Sonic the Hedgehog 3
 * Sonic & Knuckles
 * Sonic 3D Blast
 * Sonic the Hedgehog Spinball
 * Dr. Robotnik's Mean Bean Machine
 * Sonic 3 & Knuckles
 * Knuckles the Echidna in Sonic the Hedgehog 2
 * Blue Sphere
 * The Ooze
 * Comix Zone
 * Flicky
 * Ristar
 * Sonic the Hedgehog
 * Sonic Chaos
 * Sonic Drift
 * Sonic Labyrinth
 * Dr. Robotnik's Mean Bean Machine
 * Sonic Blast

Unlockable Games
Many games have to be played multiple times in order to new games, but they don't necessarily have to be played. Simply enter the game and once it has started, exit out and repeat.