This week's game is an old school arcade game (Wait! It's fun I swear!) styled after missile command. Alien Paratroopers is really one of the most fun and replayable "defense" games of its type and has some serious retro attitude going on. In this mode you proceed through waves of aliens utilizing a variety of weapons to save mankind from alien attack. Mouse key - To aim / shoot. Numbers 1-5 - to change guns. Space bar - To nuke.