Alien Killer is a smashing astronaut game that you can enjoy here on CrazyGames.com directly in your browser. This game has been played by 2,455 people and has received a rating of 8.8 / 10 with 26 votes. The game uses Flash technology to work without trouble in all modern browsers. Did you like playing this shooting game? Then also try our other astronaut games or Space Frontier and Adam and Eve: Astronaut.