is an arcade game reminiscent of Space Invaders. Invasion! is a classic game of blasting aliens out of the sky. It features 4 levels of game play, 50 waves of alien ships, and 10 different aliens armed with different weapons. Invasion! also utilizes 24-bit color, high quality music, along with animations and special effects that can only be produced with a 3D graphics card. You can choose to use a keyboard, mouse, joystick or gamepad to conduct your slaughter.