Vortex was one of the few games designed to use the SNES Super FX 1 chip, a custom-made graphics accelerator RISC processor. The game is a 3D shooter similar to Star Fox by the same development studio, but with some subtle differences. Players can morph their vehicle at any time from the standard walker to a sonic jet, a land burner and a defensive hard shell, each with their own weapons, strengths and weaknesses. (mobygames.com)