I love the amount of confused people in the comment section; the short answer to all of them is: buy the game, support the dev, this is just 12 (13?) extra missions not found in the full game
@abysssoft the drones can be destroyed by blasters and anti-creeper only. Level seems fair to me but still needs a way to get ore other then for digging.
Multiplayer would be nice and A LOT more levels. The graphics look really good so make bigger maps if you can as long as the engine doesn't crash. Please don't put upgrades in the game because it takes away from the strategy unless the upgrades reset every level because this is a great strategy game and no grind a level to upgrade to imortality