The Drakken Corporation has taken over one of Jupiter's moons, and they plan to exploit its resources for personal gain. You are in charge of making sure that doesn't happen. Build Overkill Engines (OKEs), which are unmanned mechs, from available parts or invest money in research and design. After getting the basic design you want, program the AI for the OKE and let them act according to their programs. CARNAGE HEART is a game that is going to be won with brains, not brawn.