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Popped Bloons that were glued stun nearby Bloons.
~ In-game description

Relentless Glue is the fourth upgrade of Path 3 for the Glue Gunner in Bloons TD 6. It causes all popped bloons that were affected by the glue to stun up to 6 (7 with Bigger Globs, 9 with Glue Splatter) nearby bloons within a 12 radius, stunning non-blimps for 1 second and stunning MOABs and visible DDTs for 0.25s. The blimp slowdown from the glue remains at 37.5% slowdown from the MOAB Glue upgrade, but its glue priority is, in general, two levels higher than MOAB Glue, according to the glue prioritization system.

This upgrade costs $2,890 on Easy, $3,400 on Medium, $3,670 on Hard, and $4,080 on Impoppable.



Placeholder other

Relentless Glue stunning bloons

Relentless Glue has a much more rugged and industrial look overall. For the suit, the eyeglass is now bolted onto the suit rather than MOAB Glue's eye goggles, and the suit itself is a blueish grey rather than the clean white of its previous upgrade. The vest that was previously worn by the MOAB Glue is absent, and it has boots and gloves, which MOAB Glue lacks. The upgrade also sports two glue cannons connected to the glove of each hand rather than the double barrel glue gun design; the barrels are also significantly wider and are now coated with glue rather than being entirely clean, and the hoses leading to the tank are a different color. On the artwork, the tank is now opaque, and glue appears to be leaking out of the tank itself, but in-game, it remains the same transparent design of the MOAB Glue.

In terms of the "relentless" of Relentless Glue, it causes all popped bloons affected by the glue to produce stunwaves that stun bloons for a short time, even briefer versus MOABs and DDTs, as caused by stunwaves of non-damaging sticky glue. The pierce of the stunwave can be increased with Path 2 crosspaths. Additionally, the glue priority is Level 7, tied in ranking to Super Glue.

Targeting Priorities[]

Relentless Glue targets bloons using the standard targeting priorities. It shoots straight movement projectiles.

  • First: Targets the first bloon visible within its range.
  • Last: Targets the last bloon visible within its range.
  • Close: Targets the closest bloon visible within its range.
  • Strong: Targets the strongest bloon visible within its range.

Full Popology[]


Updated as of Version 43.0
Base stats
  • Glue:
    • Projectile, acid type, detects partial hitbox, 46 range, 1.0s attack cooldown, 0 damage, 1 pierce. Applies Slowdown, slowing bloons down by 75% and soaking up to 3 bloon layers, lasts for 24s, or 37.5% slowdown for 12s for MOAB-class. Classified as a Level 7 Glue. Can target MOAB-class bloons. When popped fully, create Relentless Splat.
  • Relentless Splat:
    • Burst, acid type, detects partial hitbox, 0 damage, 6 pierce, stuns affected non-blimp bloons for 1.0s and affected MOABs and DDTs for 0.25s.
Crosspathing interactions
  • 1-0-4: Glue soaks all bloon layers
  • 2-0-4: Applies Corrosive Glue. Classified as a Level 2 Glue.
  • 0-1-4: Pierce of Glue increased from 1 to 2, Relentless Splat pierce increased from 6 to 7.
  • 0-2-4: Creates Splatter upon collision, and pierce of splatter is 4. Relentless Splat pierce increased from 7 to 9.

Attack Interactions[]

See also: Attack Interactions/Bloons TD 6/Primary
Updated as of Version 38.0
Base attack(s)
  • Glue:
    • Acid Type (pops Black, White, Purple, Lead, Frozen) Acid
    • Single Projectile Single Projectile
    • Straight Attack Straight Attack
    • No damage to all bloon types (unspecified damage) No Damage
    • Pink Glue (Soaks through up to 3 layers, lasts 24 Pink Glue (3 layers, 24s; 12s for MOAB-class)
    • Slowdown (75% speed, regular bloons) Slowdown (75%)
    • Slowdown (blimps, -37 Slowdown Blimps (37.5%)
  • Popped Glue:
    • Acid Type (pops Black, White, Purple, Lead, Frozen) Acid
    • Burst (bursts upon glued bloons is popped) Burst
    • Area of Effect Area of Effect
    • No damage to all bloon types (unspecified damage) No Damage
    • Stun (standard bloons, 1 Stun (1.0s)
    • Stun (MOAB-class Bloons, 0 Stun MOAB (0.25s, MOABs and DDTs only)
    • Target up to DDT(s) Targets DDTs


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 (X-X-4) $2,890 $3,400 $3,670 $4,080 -
Total (0-0-4) $6,720 $7,905 $8,535 $9,485 $4,704 $5,534 $5,975 $6,640
Crosspath (1-0-4) $6,890 $8,105 $8,750 $9,725 $4,823 $5,674 $6,125 $6,808
Crosspath (2-0-4) $7,145 $8,405 $9,075 $10,085 $5,002 $5,884 $6,353 $7,060
Crosspath (0-1-4) $6,805 $8,005 $8,645 $9,605 $4,764 $5,604 $6,052 $6,724
Crosspath (0-2-4) $7,630 $8,975 $9,690 $10,770 $5,341 $6,283 $6,783 $7,539

This upgrade's prices (or included crosspath's prices) are affected by the following MK: BonusGlueGunnerIcon Bonus Glue Gunner, ComeOnEverybodyIcon Come On Everybody!, BetterSellDealsIcon Better Sell Deals



Relentless Glue allows the Glue Gunner to obtain another form of slowdown in the form of a true stun. Popped bloons that were directly glued will now stun non-blimp bloons and weaker MOAB-class bloons, adding onto the MOAB Glue specialization by fulfilling immobilizing crowd control. Although Relentless Glue has a less amplified MOAB-class specialization compared to its predecessor MOAB Glue, which specializes at slowing blimps by a set amount, Relentless Glue's additional stun benefits expands upon the crowd control specialty, and relies on additional defense to help trigger these effects for its maximum potential.

In tandem with its slowing prowess to normal and MOAB-Class Bloons, Relentless Glue can reinforce a good chokepoint where bloons are rapidly destroyed from tower fire, triggering many more stuns to nearby bloons and forcing them to remain close to the chokepoints. In essence, Relentless Glue becomes a chemically operated variant of Mortar's Shell Shock with the timed functionality of Unstable Concoction; depending on the power of the defense, including self-synergy with Corrosive Glue crosspath, there is opportunity for a chain reaction of multiple successive stuns. It even does well in the late-game versus Super Ceramics; with enough glued bloons, popping many glued bloons at once allows a large chain of stuns at once. It also partially assists in further slowing progress of MOABs and DDTs.


  • The best crosspath for Relentless Glue depends mostly on what niche must be fulfilled the most. Path 1 is more useful when it comes to improving the crowd control potential of pre-81 regular bloons, while Path 2 is for optimizing the effectiveness against MOAB-class bloons by maximizing the pierce of the MOAB Glue's blimp slowdown potential and increasing its stun potential against Super Ceramics and weaker blimps.
    • Glue Soak and Corrosive Glue help to allow for penetrative crowd control. Since all individual layers can trigger a stun, the Path 1 crosspath is best for pre-81 rounds (which lack Super Ceramics).
    • In most cases, opt for what would be preferable for MOAB Glue. Path 2 crosspath adds more pierce, which can help generally distribute stuns more by simply applying the unstable stun effect to more bloons.
  • Like all Glues, it works best at the start of the track, however, it is actually beneficial to leave its targeting to First, as it can then glue most bloons behind the first bloon. This is particularly effective in rounds that open with weaker, faster bloons such as pinks or purples.
  • Always combo with Primary Training when possible, as the tower is a lot more effective with even a single extra pierce. It also works surprisingly well in tandem with Alchemist buffs.
  • The tower tends to face competition from Glue Hose and MOAB Glue as both have access to much higher pierce with Glue Splatter. However, Relentless Glue is superior at stopping bloons without needing to rely entirely on the glue status effect.
  • Relentless Glue works exceptionally well with dinosaurs from Beast Handler's middle path, as the dinosaurs have a major weakness to faster-moving and spaced bloons. Clumping up and slowing the bloons helps give more time for them to attack them, and the stun effect triggers the bonus stun damage.
  • Sauda works well with Relentless Glue, as she can deal extra damage to stunned bloons, allowing her to shred MOABs and descendents easier.
  • Pouākai has a weakness to DDTs and giant masses of MOABs, and adding Relentless Glue can patch up some of those weaknesses by stunning recently popped neighboring bloons.
  • Unlike MOAB Glue, which prefers Strong for the slowdown of strong blimps, Relentless Glue may prefer the First targeting so it can target Super Ceramics and blue MOABs, which are more likely to get harmed from the masses of stunwaves than the larger blimps.
  • Relentless Glue is very suitable for defenses that frequently damage Bloons. Conventional defenses that focus on just raw damage with low focus on stall-based defense will benefit more from chaining up stunwaves, because the defense would keep damaging the Bloons in front, allowing more opportunities to trigger the stunwaves. An example of that type of damage-oriented defense is a Sub Commander army, which generally tracks the Bloons near the front rather than lingering on specific points of the map.



None (so far)

  • [32.0] Bloons affected by Relentless Glue blobs are coated in green glue instead of pink glue. Patched in about Version 36.0.
  • [38.0] Relentless Glue’s on-pop effect is claimed to have been buffed to gain 0.25s stun duration on only MOABs and DDTs, but has actually been buffed to stun all stunnable MOAB-class Bloons for the full duration. Example 1, Example 2. Patched in 38.2.

Version History[]

Balance Changes[]

Relentless Glue was seen as a very niche tower whose main purpose was to act as a MOAB Glue mixed with a high glueing potential, particularly with 2-0-4 crosspath for bloon soaking and corrosion. It was deemed unpopular except in custom challenges that needed the maximized glueing potential and in certain "find the camo" challenges. It was reworked completely in Version 35.0 with the entire glue blob functionality moved to The Bloon Solver. Since then and the 36.0 follow-up buff to the on-pop stun, Relentless Glue has seen many more use cases as crowd control for bloons, and later blimps in 38.0. 43.0 noted the strength of Relentless as a popular support option, so has received a small price nerf.

[...] Very small nerf to the slow amount on MOAB Glue as it has for a long time held a dominating spot in MOAB support, but this same amount has been returned to the previous value at Tier 4. We are still looking at future improvements here, including reworking the priority tree of glue stacks.
~ Ninja Kiwi
  • Change Indirect buff, since MOAB Glue was nerfed from 0.625x blimp slowdown to 0.75x slowdown.
[...] Due to quirks with game state interactions temporarily preventing more nuanced changes, we have decided to leave MOAB Glue's slow amount on MOABs as it was previously, coming back to Relentless later. However xx4 Relentless Glue will still layer over the top of it.
~ Ninja Kiwi
  • Change Reverted indirect buff, as MOAB Glue came back to 0.625x slowdown. Relentless Glue will still be able to layer over MOAB Glue, however.
We were unsure this rework would make it in at all until late and didnt want to mess around too much further before release, so we plan to make further refinements to the numbers in order to bring power properly in line with what we would like - however the long awaited mechanic rework for Relentless & Super Glue is here and we feel it is a promising start. Relentless Glue now brings some AoE stun on layer popping and glue track puddles has been reworked into a dps enhancement for the top path Bloon Solver instead of a hyper niche bottom path stalling bonus (the more ceramics the merrier!). Glue Gunner has also had a number of price changes aimed at improving the middle path / crosspathing while avoiding improving MOAB Glue. We’ve already found interesting uses for the top path change so keen to hear about your cool use cases.
~ Ninja Kiwi, referring to all Glue Gunner upgrades
  • NERF Relentless Glue no longer drops any puddles on the track
    • Note: the puddles were moved to Bloon Solver.
  • BUFF Relentless Glue on any glued layer popping stuns Bloons (non-moabs) in the area with a small splat (pierce 3, radius 12, 0.5s duration)
Our Glue rework last update wasn't quite ready soon enough to go through in depth balancing of how the new mechanics felt before release, but we still wanted to just get them out and see what people thought anyway, so this is mostly just a bit of catch up on that with fixes to crosspathing value.
~ Ninja Kiwi
  • BUFF x-0-4 Relentless Glue on-pop stun pierce increased from 3 → 6
  • BUFF 0-1-4 Relentless Glue on-pop stun pierce increased from 3 → 7
  • BUFF 0-2-4 Relentless Glue on-pop stun pierce increased from 3 → 9
  • BUFF Relentless Glue on-pop stun duration increased from 0.5s → 1s
[...] Also adding a little extra bonus for Relentless glue, allowing the stun splats to work on smaller MOABs & DDTs.
~ Ninja Kiwi
  • BUFF Relentless Glue on-pop stun additionally stuns MOABs and DDTs for 0.25s
    • [undocumented, bug] Relentless Glue on-pop stun additionally affects all stunnable blimps, instead of only MOABs and DDTs, and for full duration (1.0s).
  • NERF [bugfix] Relentless Glue on-pop stun no longer affects BFB and ZOMG.
  • NERF [bugfix] Relentless Glue on-pop stun duration on MOABs and DDTs reduced from 1s to 0.25s as intended.
[...] Super Glue isn't a big upgrade to Relentless Glue for the high cost so [...]
~ Ninja Kiwi
  • BUFF 0-2-4 Relentless Glue splat on pop pierce increased from 9 to 10
[...] Glue Splatter stands out as weirdly expensive for T2, and is rarely even needed so we’re significantly cutting its price to bring it down to a more affordable range with less pierce, we hope this should make it more worth considering for splatter coverage over piercing. [...] New Relentless Glue finally offers something quite powerful so cost is slightly increasing.
~ Ninja Kiwi
  • NERF Relentless Glue cost increased from $3000 to $3400
  • NERF 0-2-4 Relentless Glue splatter pierce decreased from 5 to 4
  • NERF 0-2-4 Relentless Glue splat on pop pierce decreased from 10 to 9

Bug Fixes and General Changes[]

  • Change Description changed from "Popped Bloons that were glued, leave a blob of glue on the track." to "Popped Bloons that were glued leave a blob of glue on the track."
  • Change Resolved overlays from Relentless Glue’s track puddles using green glue assets instead of pink.
    • Note: Although Ninja Kiwi stated that this bug is fixed, this bug can still appear occasionally.
  • Change Description changed from "Popped Bloons that were glued leave a blob of glue on the track." to "Popped Bloons that were glued stun nearby Bloons."

Extra Notes (Version History)[]


Official artwork[]




  • The original design of the Relentless Glue is likely inspired by the third upgrade of the Glue Gunner's Specialty Building, the Glue Supply Depot.
  • Relentless Glue, Double Gun (and by extension, Bloon Trap and XXXL Trap), and Robo Monkey are the only towers to be holding a pair of guns.
    • Relentless Glue neither attacks faster nor attacks two separate projectiles per shot. It also does not have bonus popping power either.
  • The description for Relentless Glue was notorious for its poor grammar mistake, as noted by a number of players. Before Version 22.0, the description was "Popped Bloons that were glued, leave a blob of glue on the track." with the erroneous comma.
  • The initial design for Relentless Glue was that it would leave blobs of glue for every layer of Bloon popped instead. It was deemed too overpowered and lowered the game's performance, and was redesigned and balanced to the form used from launch to version 35.0.[1]
  • Relentless Glue is included in 'Magical Monkeys' Steam Profile background despite Glue Gunner not being in the Magic Monkeys category.