Remember Tomorrow is 4X space strategy similar to Master of Orion or Ascendancy. Unlike those two it is heavily focused on space ship design, where you can choose what engines, shields, scanners and many types of weapons to install into one of the available hulls. Besides those, more specialized modules can be used like a colonization module or a fighter bay for bigger ships. The spacecraft range from fighters to dreadnoughts plus satellites and space stations that mainly differ in the available room for modules. The amount and type of equipment affects the ship's speed, maneuverability and energy consumption.