Galactineers is a genre-mix of open world sandbox game and realtime strategy game. You can use blocks, buildings, or other items to build stations, bases, and asteroids, to shape the world to your imaginations.
Core of the game are your ships. You command them as realtime-strategy units to transport resources, harvest crystals, or accomplish PVE missions.
And the best thing: You build all these ships by your own in the Ship Designer, using hundreds of blocks and modules. You can research, to unlock more ship modules and decorations, or to build higher-level buildings and ships.
You can play online with up to 15 friends on a server and shape your world, build stations, and win PVE missions together. All content can be shared via the Steam Workshop.
Source: The Game Website.