- For the level before the v1.8 update, see Sky City - Day 4 (Pre-1.8).
<tabber> |-|Normal mode=
Crazy Dave: The cannon can automatically attack zombies, you could also use it manually for more damage.
Crazy Dave: The cannon also needs to take some time to recharge, so use it with caution.
This is essentially a repeat of Day 2 but with less Zombie Fighters. Any strategies used for Day 2 is applicable to this level. Despite having less Zombie Fighters, they're still quite a threat.
- The small number next to the zombie icon means that zombie will always appear in that lane, with 1 being the topmost lane and 5 being the bottommost one.
|Waves||Non-dynamic zombies||Ambush zombies||Note(s)|
|2||None||Carries 1x Plant Food.|
Carries 1x Plant Food.
The zombies are the same as the previous two levels, so do the same as you would from Sky City - Day 2. In addition, the player has received the cannon of the ship, which will aid them in defeating zombies.
Zombies at levels 3-4 are now present. The player should upgrade their plants for a clear shot at victory.
The zombies can be level 4, which can be troubling without a level 4 plant. It's suggested to level up some plants before trying to take on this level on hard mode. The cannon of the ship will not do as much damage as before, due to the zombies having elevated health, so keep that in mind.