Sonic the Hedgehog is a new game for the C64/128 + REU. The game is a port of the SEGA Master System 8-bit version of Sonic the Hedgehog. This game needs a 256 kB REU (RAM Expansion Unit). The game is developed by Mr. SID (code), Encore (music), Veto (pixels), Krill (loader) and JackAsser (test).