Cerberus

Cerberus is a vertically scrolling arcade shooter for the Amstrad CPC. The player commands the flagship of a pirate fleet after its crew has sold it to the Starfleet Police, and must destroy the former comrades in exchange for freedom.

Set against a black starfield, the game has the player move the ship across the screen and fire at enemies flying in fixed patterns. Cerberus can be destroyed by collisions or enemy bullets, while successful kills award points toward the high-score list.