| “ | There can be only one. | ” |
| ~ In-game description |
There Can Be Only One is one of the final upgrades in the Magic Monkey Knowledge tree, introduced in Version 3.0. It gives access to the Vengeful True Sun God while Monkey Knowledge is active. It requires eight magic knowledge points invested, X-Ray Ultra (formerly Strike Down The False) unlocked, and a one-time purchase of 
500.
Strategy[]
Summary[]
To unlock There Can Be Only One with as minimal Monkey Knowledge Points spent as possible, purchase "SUPER Range" and "Heavy Knockback" along with 2 of any other MK above the 4-MK threshold (e.g. "Lingering Magic" and "Hot Magic"), then purchase "Strike Down the False", "X-Ray Ultra", and purchase 2 other MK (e.g. "Mo' Monkey Money", "Magic Tricks"), and then purchase the There Can Be Only One MK.
In order to summon the Vengeful True Sun God, have a maximized Sun Temple (maximum benefits of three out of four categories) sacrifice the maximal amount ($50,000+) worth of tower types of all four categories (Primary, Military, Magic, Support), and also have The Anti-Bloon and Legend of the Night placed out of range of that Sun Temple. If done correctly, the newly emerged True Sun God will absorb both of the two Super Monkeys and form a dark mechanically constructed True Sun God on top of his temple base.
True to the wording, only one Vengeful True Sun God can be present on the map at any single time, which applies to Co-op.
For more info about effective strategies using the Vengeful True Sun God, see this page.
Tips[]
- Make sure the There Can Be Only One point is earned before starting a new game. Game saves only bring in Monkey Knowledge that were unlocked at the time of starting a game.
- Ensure all intricate steps for building a Vengeful True Sun God are met before the True Sun God can transform into it.
- Be sure that you have all of the Super Monkey fifth tiers because you need them for the Vengeful True Sun God. Vengeful True Sun God can't be activated without The Anti-Bloon and Legend of the Night together as a separate sacrifice.
Version History[]
For further information related to the Vengeful True Sun God itself, refer to Vengeful True Sun God#Version History.
- 3.0
- Added There Can Be Only One Monkey Knowledge
- 30.0
Note: People who already have unlocked There Can Be Only One prior to 30.0 are unaffected by the nerf, since the MK point is kept even with another MK point being added.
There Can Be Only One now requires X-Ray Ultra in order to unlock.
Gallery[]
Trivia[]
- The name "There Can Be Only One" is a quote that references the movie Highlander.
- There is a Special Mission in BTD5 called "There Can Be Only One" where Bloon Circles on Hard Difficulty must be beaten with only one of each tower type.
- There Can Be Only One is the only MK whose description matches precisely with its name, albeit in sentence form rather than titlecase.
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