Similar software:

• Alien Outbreak 1.0 — AlienOutbreak is the most addictive space shooter in the solar system. In fact, it is so much fun the government will probably outlaw the game soon. So hurry up and get your FREE trial version while you can. Show that alien scum what you are worth!
• Alien Sky 1.7.9 — Make a raid deep into alien force positions to eliminate the threat for your homeworld. You'll encounter lots of different alien ships, upgrade your weaponry with extra-weapons, blow up enemy barriers and defeat powerful bosses.
• DemonStar - Classic 4.03 — The most thrilling vertical scrolling shooter on the market! DemonStar takes shooters to the extreme with Multiplayer/Network capabilities, Force Feedback joystick support, 3-D rendered graphics, explosive sound effects, and a brilliant soundtrack.