Platform shoot-'em-up for the Sega Megadrive, developed by Treasure. Similar in many respects to their earlier game Gunstar Heroes. The player takes control of a heavily Contra-inspired armoured alien (a birdman) and has to blast their way through several linear levels of enemies. The USP of this game was that every level consists entirely of a series of bosses. With the exception of short breathers to restock between each boss, that's exactly the case.

However, the game is also incredibly difficult. Maneuvring the large player sprite out of harms way is taxing stuff. There are loads of weapons available in the game, and a large array of options prior to starting play. As a technical showcase it's pretty impressive purely in its speed and fluidity, although the Xyrinx games (Red Zone and Sub Terrania) were slightly more ambitious.