Zombie Fighter's bullet
The most common version of bullet, these are fired by Zombie Fighters if they are not too heavily damaged. They move at one quarter of a second per tile and deal 50 damage to the plant or airship. Spinnapples can deflect these for 8 seconds.
Zombot Vulture Fighter's bullet
They are only found if the Zombot Vulture Fighter is in its third phase. Before the Zombot fires a barrage of those blue bullets, the screen will flash red to warn the player. These bullets deal 800 damage per shot. Unlike Zombie Fighter's bullets, they do not deal damage to the player's ship.
Air Raid-exclusive bullets
Red bullets are the weakest and smallest,fastest move of all bullets in Air Raid. They are the only projectiles fired by Pilot Zombies and Conehead Pilot Zombies (except the second shot for the latter). Both shoot them in a straight line towards the left of the screen.
In the Easy Mode of Sky City - Day 8, the Zombie Fighter shoots 30 red bullets around it 20 times until resting for 3 seconds. Double-Cabin Aircraft Zombie shoots 2 streams of red bullets from its guns towards the plant's direction.
They deal more damage than red bullets and are always shot to the plant's location and in a spread of twelve. Conehead Pilot Zombie only shoots blue bullets when it fires a second time. Buckethead Pilot Zombies however, only shoot blue bullets. Both Double-Cabin Aircraft Zombie and Arbiter-X have the ability to occasionally fire two groups of blue bullets, twice.
These bullets are the largest and deal the most damage out of all bullets. Only fired by bosses, these always go in specific patterns, each time forcing the player to find a gap between them to dodge.
- The blue bullets in Air Raid use Homing Thistle' Plant Food projectiles' sprites.
- The yellow bullets in Air Raid is similar to Pyro-shroom's projecttile in the first stage.