SpaceTanks

SpaceTanks is a Artillery Duel variant where two players sit on two different planets and shoot at each other with a tank. To do so the player has to adjust his tank in two directions and move around the planet's surface because the missiles are affected by gravity. Every of the 32 missile types (including unusual ones like coconuts or trash cans) has different characteristics. Optional lines help to predict the course of the missile.

Even if this game is more a multiplayer game it also features a solo campaign with randomly generated maps. There the player gets money for every victory which he reinvests into new tanks, weapons, fuel or repairs.