Not to be confused with the track, Banana Factory.

High tech banana facility earns you a staggering 2000 money per round.
~ BTD4 Description
Produces 10 boxes of bananas every round. Each box is worth 200 cash.
~ BTD5 Description
Banana Research Facility (BRF)
Banana Research Facility-1

Upgraded From

Banana Republic

Upgrade #



BTD4: Easy: $8500, Medium: $10000, Hard: $10800
BTD5: Easy: $11900, Medium: $14000, Hard: $15120, Impoppable: $16800

Price with Previous Upgrades

BTD4: Easy: $12835, Medium: $15100, Hard: $16305
BTD5: Easy: $16915 ($20740 at 4/2), Medium: $19900 ($24400 at 4/2), Hard: $21490 ($26350 at 4/2), Impoppable: $23880 ($29280 at 4/2)

Official Description

High tech Banana Facility earns you a staggering 2000 per round.

First Appearance

Bloons Tower Defense 4


BTD4, BTD4 Expansion, BTD5


1 Banana Farm and 4 BRF's.

Banana Research Facility

The Banana Research Facility in BTD4

The Banana Research Facility (BRF) is the fourth and final upgrade to the Banana Farm in Bloons TD 4, or the final upgrade for path 1 in BTD5, giving 2000 money every round. It costs $8500 on Easy, $10000 Money on Medium, $10800 on Hard. In BTD5 it costs $11900 on easy, $14000 on medium, $15120 on hard, and $16800 on Impoppable. It appears in Bloons Tower Defense 4 and Bloons TD 5. It is unlocked at Rank 28 (36 in BTD5). This tower is important to get you far in the game as most towers will be near useless in later levels and the ones that make the most difference (Sun God, Laser Cannon, Tempest Tornado, etc.) will be really expensive, making them a big payoff.

Because there are fewer rounds in Bloons Monkey City, the Banana Research Facility brings $300 per box instead of the normal $200, giving a possible total of $3000 per round, if all banana boxes are collected. Also, due to the competitive nature of Bloons TD Battles, each box grants $600 instead of $200, and that the Banana Research Facility brings a total of 6 boxes per round instead of 10, giving a possible total of $3600 per round (presuming all boxes are collected)


The Banana Research Facility is the only upgrade of the Banana Farm to have no open space. There is a grey rectangular prism at the bottom of the facility. There is a large light blue window on the prism. Then there are two pipes on top of the right side of the prism. Finally, there is a cube on the left side of the prism, looking exactly like it. The only difference is that there is a banana sign on top of the cube.

How to UseEdit

  1. Use this strategy for Medium or Hard. You will need to buy the Banana Farm in the early rounds, and then upgrade it to Banana Plantation as quickly as possible. Then after 5 more rounds, you should try to buy Banana Republic. Then when you get to Round 40+, try to buy the BRF. This upgrade should be bought at or before Round 53 on Medium, or Round 57 on Hard. Let the money roll in!
  2. Getting ten of these in BTD4 will make the player get $20000 per turn and will allow the player to get tons of Sun Gods. (1 each round, in fact, assuming that the player already has a plasma monkey at the end of each round)

Update History (Bloons TD Battles Mobile) Edit

Initial release

Buff Each crate from Banana Research Facility is worth 50% more cash (without Valuable Bananas: $400 → $600; with Valuable Bananas: $600 → $900).


Nerf Banana Research Facility price increased ($14000 → $15000).


Buff Banana Research Facility price decreased ($15000 → $14000).

Buff Banana Research Facility produces more crates per round (5 → 6).




BRF icon in BTD5


Legendary Banana Farm Card with Banana Research Facility artwork shown

  • In BTD4 iPhone/iPod, this upgrade is called 'BRF'.
  • In BTD5, this upgrade produces boxes of bananas for $200 if you collected ($300 if upgraded Valuable Bananas).
  • The track Banana Factory is a Banana Research Facility.
  • Whether or not the Banana Research Facility is more useful in BTD4 or BTD5 is debatable, as in BTD4 it's cheaper, but in BTD5 it has the potential to make more money due to Valuable Bananas.
  • In BTD5 iOS, the BRF gives $2000 (without Valuable Bananas upgrade).
  • It may be that the company that owns the Banana Research Facility and Banana Investments Advisory are the same because they have the same wall color, window color and logo.
  • In older versions of the mobile game, the BRF produced 5 boxes with $400 per box (without Valuable Bananas upgrade) instead of 10 and $200 per box.

See AlsoEdit

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