Bloons Wiki
Bloons Wiki

All Primary Monkeys in radius get tier 1 upgrades for free, increased range and reduced ability cooldowns.
~ In-game description

Primary Mentoring is the fourth upgrade of Path 1 for the Monkey Village in Bloons TD 6. All Primary Monkeys within its radius gain free Tier 1 upgrades, +5 range, and reduces their ability cooldowns by 10%, alongside the benefits of Primary Training.

This upgrade costs $2,125 on Easy, $2,500 on Medium, $2,700 on Hard, and $3,000 on Impoppable.



Placeholder other

Primary Mentoring

Primary Mentoring further upgrades the wooden hut, now constructed on the ground with two groups of six sharpened wooden poles that each stand erect, with the middle front of each of them having a slight hole between to act as windows. Two flags flutter, one inside each of the middles of those poles. There is a dart on the player's right of the hut's poles, as well as on the player's left of the hut's top-left portion of the roof. Between the red-framed entrance are two snare drums, one on each side. These snare drums have red bodies with grey bars sandwiched between the beige drum tops, of which have off-white drum skins. At the very top of the front exterior wall is a frame of a target symbol in red, complete with a red bullseye and a single red ring over it, the background colored white.

Adding Path 2 crosspaths adds the usual radio masts from the respective upgrades, Grow Blocker and Radar Scanner, initially a rotating sonar dish and then a bidirectional sonar dish. Adding Path 3 crosspaths, specifically from Monkey Business and Monkey Commerce, give wooden crates on the player's right and a banana logo pasted on the top of the front exterior wall, respectively. Monkey Commerce's logo replaces the target symbol.

Primary Mentoring adds a new Primary-exclusive buff on top of benefits from the Jungle Drums and Primary Training upgrades. On top of +17.6% attack speed and +10% range, the affected Primary Monkeys gain +1 pierce, further +10% range, and +25% projectile speed from Primary Training, and Primary Mentoring further adds +5 range, -10% ability cooldowns, and free Tier 1 upgrades.

Targeting Priorities[]

Primary Mentoring supports nearby towers with influential tower buffs. However, for simplicity reasons, Primary Mentoring has no targeting priorities.


Updated as of Version 43.0. Listed prices exclude external buffs, any sacrifices, and Monkey Knowledge.
[Module | Data] Purchase Sell
Costs Easy Medium Hard Impoppable Easy Medium Hard Impoppable
Upgrade (4-X-X) $2,125 $2,500 $2,700 $3,000 -
Total (4-0-0) $5,440 $6,400 $6,910 $7,680 $3,808 $4,480 $4,837 $5,376
Crosspath (4-1-0) $5,650 $6,650 $7,180 $7,980 $3,955 $4,655 $5,026 $5,586
Crosspath (4-2-0) $7,350 $8,650 $9,340 $10,380 $5,145 $6,055 $6,538 $7,266
Crosspath (4-0-1) $5,865 $6,900 $7,450 $8,280 $4,106 $4,830 $5,215 $5,796
Crosspath (4-0-2) $6,290 $7,400 $7,990 $8,880 $4,403 $5,180 $5,593 $6,216

This upgrade's prices (or included crosspath's prices) are affected by the following MK: FlatPackBuildingsIcon Flat Pack Buildings, BetterSellDealsIcon Better Sell Deals



Primary Mentoring further improves exclusive buffs for nearby Primary Monkeys by extending the Primary Training effect to also include free Tier 1 upgrades, reduced ability cooldowns, and even more range. In addition to strategical advantages provided by Primary Training, the allowance of free Tier 1 upgrades makes it less costly to spam in more Primary Monkeys within range, in addition to allowing Primary Monkey abilities to be activated more often. Since the Primary Mentoring range buff is additive, rather than multiplicative, its extra range benefit is greatest on low-range towers, namely lower-level Ice Monkeys and Tack Shooters.

The value of the Primary Mentoring upgrade benefits makes this upgrade see its highest use in combination with Striker Jones + MOAB Mauler spam strategies. The free Tier 1 upgrades portion of the upgrade allows more MOAB Maulers to be added within range, saving a significant amount of money in the long-run to compensate the expensive supports provided by the Village. On the other hand, the MOAB Maulers benefit well from the extra range and all other preceding Village supports, while the reduced ability cooldowns increase the viability of MOAB Assassin abilities versus spaced blimps. Other popular supporting Primary Monkeys also can benefit much from this upgrade's various supports, specifically MOAB Glue, MOAB Press, Bloon Impact, and 0-1-2 Re-Freeze Ice Monkeys.


  • For the free Tier 1 upgrades, Primary Mentoring is best used with Bomb Shooters, as their Tier 1 upgrades collectively are the most expensive of their kind.
    • The two most expensive Tier 1 Bomb Shooter upgrades are Bigger Bombs ($350 on Medium) and Faster Reload ($250 on Medium), saving up to $600 on Medium.
    • As such, certain Striker Jones + Bomb Shooter strategies, particularly with either masses of MOAB Maulers or Recursive Clusters, will benefit the most from the discount portion of the Primary Mentoring upgrade. For 2-0-4 Recursive Clusters, this discount is slightly less than that for 1-3-0 MOAB Mauler spam, but each 2-0-4 Recursive Cluster can save to $550 on Medium ($350 + $200, Medium prices) per Bomb Shooter if upgraded within range of the Primary Mentoring.
  • Primary Mentoring works well with Primary Monkeys that have abilities, such as Super Monkey Fan Club, Super Maelstrom, Turbo Charge, Glue Storm, and MOAB Assassin.
  • Primary Mentoring's +5 range bonus is additive on top of the multiplicative +10% range bonus from Primary Training. As such, this particular bonus benefits the most for Ice Monkeys and Tack Shooters.
    • Because of the tiny ranges of most Ice Monkeys and Tack Shooters, the +5 range buff is much more significant of a range increase for those tower types.
    • This especially empowers the Super Brittle + Tack Zone synergy, because these two towers hand-in-hand support each others' weaknesses; Super Brittle is a poor damaging tower on its own, but its massive damage debuffs against affected bloons plus its moderately adequate stalling power against Super Ceramics allow the Tack Zone to reap up large amounts of damage, especially against Super Ceramics, the bloon types that Tack Zone may typically struggle heavily against.
  • Generally speaking, the effective crosspathing for the Primary Mentoring depends on the situation. In most cases, however, a 4-2-0 Primary Mentoring is more desired to grant camo detection to nearby Primary Monkeys, although 4-0-2 Primary Mentoring is not a bad option for further saving a good chunk of money for more expensive lower-tier Primary Monkeys.

Version History[]

Balance Changes[]

Previously, Primary Mentoring did nothing outside of making Primary Monkey Tier 1 upgrades cheaper, which had little to no effect outside of supporting lower-tier Bomb Shooters. Primary Mentoring was buffed in Version 17.0 to add more buffs to other aspects of Primary Monkeys, specifically additive range and reduced ability cooldowns.

  • BUFF Primary Mentoring now reduces ability cooldowns of primary monkeys in radius by 10%.
  • BUFF Primary Mentoring now adds +5 range to primary towers in range.

Bug Fixes and General Changes[]

  • [Undocumented] Description changed from "All Primary Monkeys in radius get tier 1 upgrades for free." to "All Primary Monkeys in radius get tier 1 upgrades for free, increased range and reduced ability cooldowns."

Extra Notes (Version History)[]


Official artwork[]


  • In Version 17.0, there was a bug where upgrading to Primary Expertise did not grant the special Primary Mentoring bonuses to nearby Primary Monkeys. This was fixed as of Version 17.1.