Zeppelin

The Zeppelin is the only air unit in the game. It can be produced at an Airfield tile for a cost of 25. It has a movement speed of 1, but a vision radius of 10. The zeppelin has 3 hitpoints.

Move
As an air unit, the Zeppelin unit cannot attack or be attacked. Zeppelins can only be harmed by indiscriminate damage abilities such as Bombard or Shell, or by firestorm. However, if an air unit is ordered to move into a space occupied by an enemy air unit, it will crash into it, killing both units instantly.

Drop gas
The Zeppelin unit can drop 2 Gas onto the space below it. This ability does no immediate damage but reduces the hitpoints of all units on the tile by 1, and deals damage in the decay phase. Since the Zeppelin drops 2 gas, it will spread on the next turn to a 3x3 tile block of gas.

Gas leak
The Zeppelin unit will emit 1 Gas when it is killed.