Sonic the Hedgehog (16-Bit)
The game has subsequently been ported to Microsoft's Xbox Live Arcade service, Virtual Console for Nintendo Wii and Playstation Network, aswell as included in several compilations or as an unlockable bonus:
- Sonic Compilation for SEGA Mega Drive/Genesis
- Sonic Jam for SEGA Saturn
- SEGA Smash Pack for SEGA Dreamcast
- Sonic Mega Collection for Nintendo Gamecube
- Sonic Mega Collection Plus for Nintendo Gamecube, Sony Playstation 2 and Microsoft Xbox
- Sega Genesis Collection/Sega Mega Drive Collection for Playstation 3 and Microsoft Xbox 360
- Sonic's Ultimate Genesis Collection/Sega Mega Drive Ultimate Collection for Sony Playstation Portable
- Sonic Classic Collection for Nintendo DS
- Sonic Generations
 Sonic the Hedgehog Genesis
Sonic the Hedgehog Genesis is a special edition released for the Gameboy Advance in 2006 to mark the 15th Anniversary of the game. The game has been altered to run on the handheld's widescreen display and the optional addition of the Spindash attack from Sonic the Hedgehog 2.
Dr. Robotnik, after discovering the power of the Chaos Emeralds, is set on conquering the planet and turning all the animal inhabitants into his robot slaves. So Sonic sets about travelling across the six zones and collecting the emeralds before Robotnik can.
The game is split into 6 main zones comprising of 3 acts each with a boss at the end of each 3rd act. Upon finishing act 1 or 2 of any zone with 50 rings or more, Sonic has the chance to enter the Special Zone and attempt to collect 1 of the 6 Chaos Emeralds.
- Green Hill Zone
- Marble Zone
- Spring Yard Zone
- Labyrinth Zone
- Star Light Zone
- Scrap Brain Zone
- Final Zone
- Special Zone
- Egg Mobile (Wrecking Ball)
- Egg Mobile (Fireballs)
- Egg Mobile (Spike)
- Egg Mobile (Tunnel Retreat)
- Egg Mobile (Mines)
- Final Zone
 Achievements and Trophies
When the game was released for Xbox 360, as with all XBLA games, achievements were given to the game. There are 12 achievements worth 200 Gamerscore. When the game was later released on PSN the achievements were matched to 12 trophies, 1 gold, 4 silver and 7 bronze.
Music from the game features in the following CD soundtracks: