Sonic Roms Guide -- Genesis (Sonic CD)

Sonic the Hedgehog for the Genesis was the very first Sonic title and the only game in the series, outside of Sonic Adventure, that was produced exclusively by Sonic Team. Since it sparked the entire Sonic revolution and kept Sega's head above water in an age when the gaming industry was ruled by Nintendo alone, it has attained the status of "legendary" and anyone who doesn't have it is gay.

Rom Variations

Sonic CD (North America/Europe) (1993)
This is a rom from the very first production copies of the game. Later versions of the game are said to lack the debug mode cheat, though this is unconfirmed (as are any other adjustments).

Sonic CD (Japan) (1993)
The Japanese variation of the game came months after the domestic release and a few changes were made. The differences are minor and just a bit strange; the clouds in Green Hill scroll now, there is parallax in Marble, the underwater segments of Labyrinth have a weird wavy effect, and the level select is, like, in order!

Related Roms

Sonic CD (Beta Version)
When locked on to the Sonic & Knuckles cartridge, the original Sonic seems to behave just like any other cart you could lock on (we'll excuse the animation and color for simplicity's sake, alright?). If you hold all three buttons down, however, you'll enter a bonus game where you face 134,217,728 sphere special stages...if you make it through all of these for whatever reason you go back to the beginning. Argh! The data for this game is stored in S&K, but it's worth noting that the North American and European release of Sonic 1 was used to make this rom.