Captain Forever is an online game where you build and fight in spaceships.
As with all ships, removing their command module frees up all of their modules, which you can then use to build your ship. On the other hand, a white mark on the command module lets you tell who the player is. If you know the right crafting recipes, you can even change your logo to reveal or conceal your goals.
A very small number of modules will spawn on drones, but you can make a lot more. Pick up a cluster that fits a plan for making something new and press C.
Have fun and good luck!