Programmed by the Team 17 videogame company, it was regarded as one of the best games for that platform, both for its technical excellence in graphics and sounds, and for its difficult and interesting gameplay.
In classical scrolling shooter fashion, players controlled a spacecraft battling with hundreds of alien ships. Various power ups, numerous in the first level but increasingly rare afterwards, permitted an exponential increase of the spacecraft six different weapons.
The game was composed of six levels. Many players never completed the second one (which had a very difficult ending), and most of the rest never went past level three.
wikipedia.org dumped 2003-03-17 with terodump