Genericorp's experiments opened the rift at the bottom of the of the Helles Sea, horrific monsters are pouring through, and you need to fight them back! Attack on Mars is a co-op game for 2-4 players. Choose your pilot, your corporation, and your Mecha. Upgrade your Mecha while defending cities and fighting monsters. Research how to close the rift and then fight the Guardian in order to do so. Win, and Mars is safe. For now.