Six levels of horizontally-scrolling shooting await in this R-Type style action game. The attack waves vary in style, with some attacking you from quite fiendish angles.
These give off blue power-up tokens, which are used towards selecting one of many weapons. There are 4 front-firing options (guns, plasma, magma and laser-beams - guns can be built up quickly but lack top-end power compared to the others) as well as speed-up (only requires one token), side-shot, up to 3 homing missiles, build (a quick super-destructive blast that only functions when you aren't using auto-fire) and stealth (a period of invulnerability).
Each level has a very different setting, and an end-of-level boss to defeat. The chance to resume from the level you died at is offered up to level 3.
Unusually, the game has an option to emulate an auto-fire function using software.