Most space shooters stick to offline campaigns, but Space shooter - Galaxy attack throws in online PvP and co-op if you want to test your skills against real...Most space shooters stick to offline campaigns, but Space shooter - Galaxy attack throws in online PvP and co-op if you want to test your skills against real people. The main draw is dodging endless waves of aliens while upgrading your ship between missions—classic, but satisfying. Some levels feel like a grind if your ship isn’t upgraded, and the push for gems can get in your way if you don’t want to spend. Still, if you want a classic shoot 'em up with a bit more bite, this one keeps the screen busy.