Under no circumstances should you fight your way to the top in an octagon or a triangle!

Robo Pit is a robot fighting game released in 1996 for PlayStation and Sega Saturn. The game was developed by Kokopeli Digital Studios and published by Altron. A sequel, Robo Pit 2, was released in Japan on PlayStation in 1997 and 2003 in Europe and North America.

The rules are simple, build a robot and then try to fight your way to the top in arenas that are square in shape.

-http://en.wikipedia.org/wiki/RoboPit