There are 10 unique levels in this fast-paced online action packed typing game. Swarms of aliens come down each night causing noting but havoc but you decide to put an end to their evil invasions. Be very quick to spot the targets, look at the launch code and then type the code correctly. You can then press the enter key to fire a missile. In the training levels of the game, the aliens do not cause any damage even on reaching the base but in the main game, you simply cannot afford to let that happen. This game is fun filled online tying game that contains defence game elements.