Underminers Inc. is an RTS centered around mining both for ore and tactical advantage. Send out your miners to dig tunnels, and collect ore. Then refine that ore into military units to attack the hostile miners who are trying to steal your ore (and kill your bots, too).

Note that due to time, the UI is a bit unpolished/buggy. If units ever get into strange states, like getting stuck against walls, remember that you can always reset their command queue by giving them a single move order. You can also order drills to work on a specific "mining plan" spot by selecting them and right clicking on the orange X of the plan.