CubeWars

A territory game on a grid of colored cubes, played against the computer. You start from a base marked with a flag and capture neighbouring cubes vertically and horizontally, taking any color except the one your opponent currently holds — and because your own flag color changes as you go, the set of legal moves shifts under you. CubeWars is therefore less about grabbing the most cubes now than about not painting yourself into a color you cannot leave.