This game is amazing, published by LucasArts uses the same game engine as Zombies Ate My Neighbors, similar in style to Assault Suit Valken AKA Cybernator. You can get out and steal, other mechs, alternate weapons that let you power up your mech, and there is a local 2p vs mode where you can pilot any of the mechs against a friend. Also really good looking 16 bit anime cutscenes that channel Mobile Suit Gundam!
Never released outside of the SNES, this is the kind of game that needs preservation! People please vote for this one!