Pirate Galaxy offers a 3D environment in a browser-based game. The story concerns the invading alien Mantis and the fight to stop them. There are several modes of play, including traditional missions, docking at the station with its interaction, trading, and optional customization options, and the heart of PG: space combat.

Pilot your spacecraft into orbit or fly over the surface as you take on the Mantis as well as your fellow pirates in PvP if you'd like. Paid upgrades are available, and these include resources obtainable in-game.