A strategic management game, best described as a sci-fi tower defence game with moving spaceships and configurable units. Design your own ships from a series of hulls+modular components, group the ships into a fleet, give the fleet orders and positions and then watch it engage in OTT gratuitous space battles against enemy fleets.
Video showing the various elements of the indie strategy game 'Gratuitous Space Battles'. Currently in beta, but pre-ordering the game now from Positech or Impulse gets you the beta copy to try out. GSB is not a conventional RTS game, but a blend of RTS and Tower Defense, with the emphasis on planning and fleet design. The battles themselves are non-interactive, forcing you to choose your ships, weapons and AI orders very carefully before battle begins.
This game looks amazing.