Bosconian

The aim of Bosconian is to score as many points as possible by destroying enemy bases and ships. The player controls a small battleship that can move in eight directions and can shoot both forwards and backwards. Each level consists of a series of green space stations, all of which must be destroyed in order to progress to the next level (a semi-transparent mini-map helps to determine their position). Each station consists of six cannons arranged in a hexagon surrounding a central core. The player must either destroy all six cannons or shoot at the core to destroy a station. In later levels, the core is able to defend itself. The player must also dodge or destroy asteroids, mines and a variety of enemy missiles and ships that attempt to collide with the player's ship. Enemies occasionally launch formation attacks - destroying the leader causes all remaining enemies to disintegrate, but destroying all enemies in a formation earns additional bonus points. Occasionally, a spy ship (with a random bonus value) will also appear, which must be destroyed or the enemies will run amok.