Global Upgrades

Global Upgrades is a feature similar to Premium Upgrades in Bloons Tower Defense 4 and 5 and Monkey Knowledge in Bloons Monkey City. These are upgrades that have an impact on every game after their acquisition but can be disabled and alternated between whenever necessary with no drawbacks. They vary from tower-specific, to class-specific, to 100% global. The wider the span of the upgrade, the more expensive or less powerful it is. Most upgrade sets have a pattern in which between one and three upgrades follow a single path which then forks off into two or more paths

Tycoon
Cheaper Towers 1: All base towers are 3% cheaper. Costs 20 Monkey Money.

Cheaper Upgrades 1: All upgrades are 1.5% cheaper. Costs 30 Monkey Money.

Sellback 1: Selling towers returns 88% of what was spent. Costs 75 Monkey Money.

Cheaper Towers 2: All base towers are 10% cheaper. Costs 100 Monkey Money.

Cheaper Upgrades 2: All upgrades are 7.5% cheaper. Costs 200 Monkey Money.

Sellback 2: Selling towers returns all of what was spent. Costs 1000 Monkey Money.

Base Path
Improved Darts: Darts have a 25% chance to pierce 1 extra bloon. Costs 15 Monkey Money.

Improve+: Darts have a 50% chance to pierce 1 extra bloon. Costs 20 Monkey Money.

Path 1
Flechette Darts 1: Darts splinter into 2 pointy fragments after reaching their pop limit. Costs 30 Monkey Money.

Flechette Darts 2: Darts splinter into 4 pointy fragments after reaching their pop limit. Costs 80 Monkey Monkey.

Exploding Darts 1: Instead of fragmenting, darts explode after popping all they can. This can pop Lead Bloons. Costs 200 Monkey Money.

Exploding Darts 2: Ups the strength of the explosives, giving a larger explosion with a higher popping power. Costs 300 Monkey Money.

Path 2
Dagger Darts: Replaces darts with daggers, which can pierce up to 4 bloons. Costs 30 Monkey Money.

Power Daggers: Daggers can pierce up to 10 bloons and can pierce frozen bloons unaided. Costs 100 Monkey Money.

Broadsword: Darts are now powerful broadswords that pop two layers off of up to 15 bloons. Costs 250 Monkey Money.

Laser Katana: Lasers are awesome; this is why they replace broadswords. They pop two layers, up to 40 bloons, as well as frozen and lead bloons. Costs 1000 Monkey Money.

Base Path
Improved Tacks: Tacks have a 25% chance to pierce 1 extra bloon. Costs 15 Monkey Money.

Improve+: Tacks have a 50% chance to pierce 1 extra bloon. Costs 20 Monkey Money.

Path 1
Awesome Tacks: Tacks always pierce 1 extra bloon. Costs 30 Monkey Money.