Ground Zero (BTD5)

"Ground Zero Ability: drops a single devastating bomb that destroys all bloons on screen except MOAB-Class Bloons."

- Bloons TD 5 Upgrade description

Ground Zero is the final upgrade of Path 2 for the Monkey Ace in BTD5. It gives the Monkey Ace with the Ground Zero ability. Using the ability instantly deals 350 damage to all bloons on screen.

Later in BTD6, this upgrade returns as the fourth upgrade of Path 2, but with a new set of predecessor upgrades and potential crosspaths.

Description
Ground Zero is the final upgrade of Path 2. It costs $11,900 on Easy, $14,000 on Medium, $15,120 on Hard, and $16,800 on Impoppable.

The Ground Zero ability is similar to the Super Monkey Storm. It wipes out all regular bloons, and deals 350 damage to MOAB-class Bloons (350 damage is enough to wipe out MOABS, but it won't completely destroy MOABs in very late rounds). It is very useful for taking out tight bunches of bloons or bloons that look like they're getting away. Use it for emergencies. This upgrade changes the color of the Monkey Ace from gray to black.

The only real differences between the Ground Zero Ability and the Super Monkey Storm discounting the damage is that Ground Zero costs a large amount of in-game money and is reusable like other Special Abilities, without having to pay 50 to use it. Although this ability can deal a significant amount of damage to ZOMGs, it is advised to pop the ZOMG layer before using this ability if possible.

The landing base will appear the same, even with this upgrade.

Differences Between BTD5 Flash and BTD5 Mobile
Ground Zero yields more cash when used against Ceramic Bloons.

Update History (Bloons TD Battles Mobile)
3.9

Ground Zero price increased ($14000 → $16000).

4.3.1

Ground Zero deals more damage (350 → 400).

Trivia

 * A common abbreviation for Ground Zero is "GZ".
 * Non-MOAB Bloons popped by this ability give cash as normal.
 * However, if used on MOABs after income cuts take effect, the ability appears to give much more cash than intended, possibly due to the fact that the Ceramic children of MOABs destroyed using the ability ignore income cuts.
 * 2 Ground Zeroes can easily complete the MOAB Madness Special Mission if properly timed.
 * This tactic can be used over and over for fast XP (and money on Mobile, although regrow farming may be more efficient).
 * In Bloons Monkey City, a single Ground Zero will pop a D.D.T., but the Camo Regen Ceramics inside will survive the blast because it has 350 health and the bomb does 350 damage.
 * It takes 3 Ground Zeroes to completely destroy an unramped BFB, and 15 to completely destroy an unramped ZOMG.
 * Upon unlocking this upgrade by ranking up, the description for it confirms that the Ground Zero bombs contain bloontonium.