If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
While working in his Lab, Jimmy intercepted a message from deep space revealing an alien plot invade earth. Match alien ships by color to make them disappear. To move to the next level, you must eliminate the pre-determined number of aliens before time runs out.
To move a Ship, Click on it then Drag it to an empty tile. You can't move diagonally or over other ships or aliens.