Protect the Earth from alien invasion in this insanely challenging puzzle game!

You are a gunner on an Earth Alliance Starship. Detect cloaked alien spacecraft by firing your radar probe across the screen. When you think you know where an enemy ship is located, place your crosshairs on the screen where the ship is hiding and hit the Fire button! For Training Missions you will have the advantage of receiving both visual and sound feedback from your radar probes. Learn the sound feedback well during your Training Missions because on true Combat Missions you will have to rely solely on the sound feedback from radar hits, richochets and misses to determine where the cloaked alien spacecraft is lurking.

You have limited time to find the alien ships, but be careful - if you miss or run out of time, the aliens will destroy you!

This game WILL push you to your limits, so be prepared to have your brain challenged! Randomly generated boards will keep you guessing for hours on end!