Tyrian is a shooting game that is somewhat similar to the Apogee offering "Raptor: Call of the Shadows". The object is, as so often the case for this particular genre, to blow everything up! It's a detailed and graphically intense space shoot-em-up with advanced (for the time) graphical effects and great sound/music. It also features an interesting plotline (for a shooting game) and many secret levels/bonuses to find. Tyrian 2000 (full version) has now been released for free by GOG.com.