When called by pressingbutton, homing missiles will be launched from the sky. The damage and missiles vary on the level upgrade. Bombing level can be upgraded with battle money (dollar) for $3000 in each upgrade and has level 40 as maximum. The total cost for 39 upgrades is $117000. Invincibility will be executed automatically upon usage of which the duration depends on the level.
In New Zombie Shelter, the Airstrikes can be called after using 'Bombing Request' skill (only for players who use Combat Skills tree, key by default). The players can use Airstrikes to against zombies or bosses.
In Zombie Giant, the Airstrikes can be launched via General Atomics MQ-9 Reaper after calling through a control box. However, player can only launch 1 missile for each shot, and available for short time (30 seconds for each using). In later updates, Airstrikes also can be launched by using the Laser Guide (noted that it only has one usage).
- Directed bombing redirects Half-Life's Tactical Map Airstrike.
- Before the major Human Scenario update, the Airstrike can only be called by collecting 5 supply boxes randomly dropped around the map. However, the missiles would only be launched onto the area the user was looking at.
- The old Airstrike for Human Scenario had a few seconds delay before it could be initiated, without providing any protection against the user. In addition, only ONE Airstrike can be utilized every minute, forcing other users to wait for their turn.
- Airstrike also can be called as a supporting skill by players in some other maps:
- Airstrike at Wikipedia.