The Asteroidfield is a strategy game that uses 3dimensional maps, unit movement and formations.

The strategic side of the game involves defending your support lines and production sides as well as constant recon and using the correct combination of units for the job at hand.
But without the necessary supply the best fleet is just sitting ducks. Resources must be harvested, refined and formed into the needed shape to meet the need for energy, ammunition, fuel and repairs.
Progress is defined by the level of your production and manufacturing sides not by research. Civil units may be adapted to the current situation by changing or upgrading their modules.

Maps and Missions are defined in xml-files and can be created by any player.

Come visit the website to get a deeper impression.
And have a look at the game's youtube channel.