total of 40 levels out of which 8 are skill levels
non-ending gameplay: after the 40th level the game continues from the 1st level but this time it's a little bit harder
11 enemy types
3 levels of difficulty with separate hiscore tables
various power-ups
support for joystick or gamepad1
fullscreen or windowed game display
fullscreen resolutions up to 1024x768 in 32 bits
beautiful moving nebulas and galaxies in the background
magnificent explosions with long smoke trails
2 views: 3D view and top view (press F2 to switch between them)
integrated MP3 player (you can put up to 50 songs in playlist)
3 levels of sound quality
music player controls on function keys (F5-F9)
ability to assign joystick buttons to music player controls
fast exit to system (F12) in case your boss is comming :-)