Behold the Mario 64 that might have been. Argonaut was on top of the world, doing 3D programming for Nintendo. When they cooked up a prototype 3D Yoshi game in their spare time, Nintendo was intrigued... but they passed. So the two organizations went their separate ways. That prototype became Croc, while Nintendo went on to make Mario 64. Are these things related? I don't know, let's just talk about pubes.