Just scorching the surface.

Metal Fatigue is now available DRM-free, only on GOG.com.
Advanced, abandoned, fully functional alien technology. That's what was waiting for us in distant stars. We collected, studied, and reassembled it as best we could... and then we used it to destroy each other, RTS-style. Take control of three mega corporations as they clash in fully-3D battlefields, using customizable mechs made from the spare parts the mysterious Hedoth left behind. But remember: the planet's surface is not your only concern, general. Enemies can come from underground or descend from orbit.