Tiny Toon Adventures - Buster's Hidden Treasure (USA) ROM

I used to play this game when I was a kid. It's a great sidescroller but you need to be careful as there are limited number of "do-overs" and it really sucks getting close to the end only to have to restart the game because you ran out of extra lives.

Tiny Toon Adventures plays pretty close to a Sonic game. One of my favorite childhood Genesis games for sure. It's pretty long, although I've beaten it with an emulator in a day. There's a password system if you don't have an emu.. There's branching paths on some levels as well which lead to different exits on certain levels. The overworld is like Super Mario 3 with different paths all leading to the same end destination. There's some bonus levels too, activate by finding the rainbow circle in a level. You fight enemies by jumping on them, and collecting carrots for power ups. I think there's 3 of them, and each is a different Tiny Toons character that clears all the enemies from the screen. Give it a try!