Some of the recommendations here are good classics, but if you're looking for some REALLY good ones:

* Sonny 2 (really in-depth turn based RPG)

* Fancy Pants Adventures 1-3 (2D platformer)

* Larry and the Gnomes (Beat 'em up)

* Interactive Buddy 2 (Fun simulator toy)

* Final Ninja Zero (2D platformer)

* Bubble Tanks 2 (Twinstick shooter)

These really take me back...