Check out this Mega Drive Portable from AtGames.
It comes with 20 Sega Genesis games on it, including Sonic the Hedgehog, Golden Axe and Ecco the Dolphin.
It is available to buy online from Play-Asia for $39.90.
Technabob via DVICE
Just spend a little more money and pick up a GP2X. Megadrive, NES, SNES PSX, GB, GBC, GBA, and everything before those can be emulated in your hands.
