From Boss Baddie:
Really Big Sky is a proper, red-blooded, co-op enabled, mind melting, eye bursting, arcade inspired space shoot 'em up! Play with up to 3 buddies as you blast your way through the universe leaving nothing but destruction in your wake as you plough through waves of bad aliens! BE THE HERO Can you save [your planet] from utter annihilation? Of course you possibly could, especially when you're armed to the teeth with gloriously overpowered weaponry! They've given you a really splendid spaceship and they're not expecting it back. FEATURES 7 Juicy, full fat Game Modes 3 giant, dynamic Bosses and 15 enemies 4 Player Co-op with scalable difficulty 15 Powerups, Perk System, New Weapons and the Friendly Mothership 20 Achievements Giant Lasers - Good and Bad! Narration from a cheeky cockney AI Full Tutorial and Xbox 360 controller (or compatible) support Library and Secret Unlocks Smash through solid planets and asteroids, cruise through gas giants Comprehensive stat recording system Faster, adaptive and addictive gameplay Blackhole, Wormhole and loads more new Events Hell Cascade Event.