Rebellion will be the first standalone expansion for the marvellous 4X space strategy, Sins of a Solar Empire. It'll split the universe into two factions, loyalists and rebels. You can join one side or the other to gain access to new tech trees and alternative versions of each faction's most powerful vessels.
The expansion will also add jumbo sized battlecraft called Titans. These monsters will be even bigger than capital ships and will be able to take on enemy fleets single-handedly. They'll get to dissolve incoming pirate raids with new giant laser beams, prettified by a new lighting engine. See Titans and their pet lasers in action in these new screenshots.