The game features customizable characters and up to 4 players in co-op, either online or off.
On May 14th, 2008 Capcom has released an expansion pack titled Rocketmen: It Came from Your Uranus for $4.95. The add-on adds 5 new weapons and 3 new levels and allows you to upgrade your character even further.
Players will join the heroes of the Alliance of Free Planets in their white-knuckled, frenzied struggle to free the Solar System from the tyrannical grip of the Legion of Terra. Up to four players will be able to cooperatively shoot their way through multiple levels, powering up their weapons, picking up bonuses and laying waste to anything that moves.