Although apparently mainly an adventure game, Hybrid Heaven includes light RPG and Fighting game elements. It's your typical sewer-dwelling-clones-planning-to-undermine-the-government story: You play a clone guy, who just shot another clone who was important to the plan of seizing the U.S. Government. Whoops! Your bad. Just when you think they'll make you do the dishes for a month as punishment, they decide you should die instead. From there you adventure on in a 3rd person tomb raider style game.
Hybrid Heaven is a Nintendo 64 exclusive.