A final patch (version 3.1c, and included here) added 6 new units, including a resurrection kbot! Battle Tactics added 4 new units, 6 new maps, and 100 new missions. The Core Contingency expansion pack added 75 new units (including the infamous Krogoth), 50 new maps, 25 new missions, and 6 new world types.
The Core and the Arm have all but exhausted the resources of a galaxy in their struggle for domination. What began as a conflict over the transfer of consciousness from flesh to machines escalated into a war which has decimated a million worlds.