Read this if the game doesn't load.
About the S Factor Sonia and Silver Game
S Factor Sonia and Silver from Sega 1991 is playable online. This looks like Sonic based game and have almost the same concept to play.
Civilization (DOS)
The SIMS Bustin' Out (GBA)
Max Payne Advance (GBA)
Tony Hawk Pro Skater 4 (GBA)
Mega Man 7 (SNES)
Pocket Monster Yellow (Japan) (NES)
Pokemon Orb Version (Game Boy)
Tetris (1989) (GBA)
Jackie Chan Adventures: Legends of the Dark Hand (GBA)
Pokemon FireRed Evolution (GBA)
Pokemon Dreams (GBA)
Teenage Mutant Ninja Turtles (NES)
Super Mario Kart (SNES)
Star Wars - Episode 2 - Attack of the Clones (GBA)
Pokemon Sweet (GBA)
Dynablaster (NES)
Pocket Monster Yellow (Japan) (NES)
Star Wars - Episode 3 - Revenge of the Sith (GBA)
Batman Returns (SNES)
Sonic the Hedgehog 2 (World) (Sega Genesis)
Payback (GBA)
Contra (NES)
Jackie Chan Adventures: Legends of the Dark Hand (GBA)
WWF WrestleMania Challenge (NES)