Your goal in this tower defense game is to take a role of rookie commander of the human alliance fleet and defend orbital platforms against the assaults of a mysterious new enemy. You are able to build defensive towers on each of the platforms and you must decide where and when to build towers to successfully defend mankind from these weird aliens. In some levels the enemies will always travel down a certain path, but in others you have the chance to manipulate the enemies how you like. Sometimes you can even force the enemies into environmental dangers, such as molten lava. Use YOUR MOUSE to play the game. Good luck!