GSB is the ultimate space strategy game. It's a strategy / management / simulation game that does away with all the base building and delays and gets straight to the meat and potatoes of science-fiction games: The big space battles fought by huge spaceships with tons of laser beams and things going 'zap!', 'ka-boom!' and 'ka-pow!'.
In GSB you put your ships together from modular components, arrange them into fleets, give your ships orders of engagement and then hope they emerge victorious from battle (or at least blow to bits in aesthetically pleasing ways).
Gratuitous Space Battles aims to bring the over-the-top explodiness back into space strategy games. The game is for everyone who has watched big space armadas battle it out on TV and thought to themselves 'I could have done a much better job as admiral'.
This is not a game of real-time arcade twitch reflexes. GSB is about what ships you design, and what you tell them to do.