You didn’t really think that after completing the Stationary Tar Cannon your faction’s engineers were going to rest on their laurels, did you? So you are probably ready for the third type of Stationary Gun straight from the engineering department:
The Stationary Nebula Cannon has arrived.
Its high-power smoke discharge technology severely limits the target unit’s sight in mere milliseconds. This leads to a temporary reduction in firing range which can make all the difference on a crowded battlefield!
As soon as you have placed a Stationary Gun, it will become active and carry out autonomous attacks on enemy units in range. For every unit destroyed the gun’s owner will receive a bonus! If however the gun is destroyed in battle, the victorious attacker will receive a bonus instead.