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Shattering shells strip all bloon properties off all but the biggest bloons.
~ In-game description

Shattering Shells is the fourth upgrade of Path 3 for the Mortar Monkey in Bloons TD 6. It allows the Mortar to remove Camo, Regrow, and Fortified properties from Bloons. This includes Blacks and Zebras with Camo, Regrow, or Camo Regrow, even if it cannot damage them.

Shattering Shells explosions are able to remove Camo Bloon properties from non-DDT bloons (unless with Paint Stripper MK), all Regrow Bloon properties, and Fortified Bloon properties from all bloon types except ZOMGs and BADs, and requires Paint Stripper to remove fortification from DDTs.

This upgrade costs $9,350 on Easy, $11,000 on Medium, $11,880 on Hard, and $13,200 on Impoppable.



Shattering Shells changes the mortar cannon's barrel into a vase shape, the entire barrel dark red, and the base becomes light grey. On the barrel is a yellow flame pattern with orange outline, the pattern placed just below the tip of the barrel. The monkey now wears dark red goggles, as well as retaining grey gloves, a grey headset, and red helmet with a flame symbol. On the upgrade portrait, the monkey crosses its arms and smiles, leaning towards the barrel as it fires a burst of flames.



Targeting Priorities[]

Mortar Monkey has only one target priority, "Set Target". This allows the Mortar Monkey to land shells within anywhere inside the target reticle. Tapping on the "Set Target" button prompts the player to change the target position of where the Mortar Monkey will land its shells. By default, once the Mortar Monkey is bought, the Mortar Monkey's target reticle is placed near the start of the first bloon track.


Updated as of Version 32.0. Listed prices exclude external buffs, any sacrifices, and Monkey Knowledge.
Purchase Sell
Costs Easy Medium Hard Impoppable Easy Medium Hard Impoppable
Upgrade (X-X-4) $9,350 $11,000 $11,880 $13,200 -
Total (0-0-4) $11,175 $13,150 $14,200 $15,780 $7,823 $9,205 $9,940 $11,046
Crosspath (1-0-4) $11,600 $13,650 $14,740 $16,380 $8,120 $9,555 $10,318 $11,466
Crosspath (2-0-4) $12,025 $14,150 $15,280 $16,980 $8,418 $9,905 $10,696 $11,886
Crosspath (0-1-4) $11,430 $13,450 $14,525 $16,140 $8,001 $9,415 $10,168 $11,298
Crosspath (0-2-4) $11,855 $13,950 $15,065 $16,740 $8,299 $9,765 $10,546 $11,718

This upgrade's prices (or included crosspath's prices) are affected by the following MK: MilitaryConscriptionIcon.png Military Conscription, AdvancedLogisticsIcon.png Advanced Logistics, BetterSellDealsIcon.png Better Sell Deals

Full Popology[]



Damage Types[]




The prime value of Shattering Shells comes from defortifying MOAB-class bloons, particularly from high-HP rounds especially from the notorious Round 98. Although not a single-handed game-changer, it can greatly reduce the difficulty of specific rounds where the main bloon reinforcements come from fortification. Its potential is greatest in Rounds 81+, where the accelerating scaling of blimps and presence of Fortified Super Ceramics both become significant issues.

Alternatively, Shattering Shells can be used as a niche support tower against rounds with fortification on earlier rounds, specifically starting from Round 62, and against rounds with Regrow Bloons. When it is used for this niche, it is usually to go for Blooncineration.


  • Since Shattering Shells causes the Mortar Monkey's shots to remove Camo, Regrow, and Fortified, it is a good idea to have a Mortar Monkey with this upgrade aim at the start of the track so it can remove the Fortified status from incoming MOAB-Class Bloons to make them easier to take down. DDTs, ZOMGs and BADs are immune to having their Fortified property removed, although Blooncineration can strip off all DDT properties.
    • If many Fortified ZOMGs approach the battlefield, placing the targeting reticle where the parent Bloon would pop can help to remove fortifications on the resulting children.
  • Being able to specialize against Fortified Bloons, it is an excellent choice to combatting rounds 97 and 98, though the ZOMG layer with its own fortification needs to be popped first.
  • Regrow Bloons also lose their properties when hit by Shattering Shell's blast, allowing for it to assist in beating difficult rounds such as 76 and 79.
  • It is generally not necessary to crosspath this Mortar, but if needed, a faster-firing 0-2-4 Shattering Shells is generally more useful than the increased explosion radius and mere one extra damage the 2-0-4 Shattering Shells brings. 0-1-4 Shattering is generally sufficient anyway, but 0-2-4 makes micromanaging it a lot easier on maps with multiple opposing entrances such as Dark Castle, #Ouch, or Quad.
  • There are exactly 11 rounds in a standard game that contain Fortified MOABs and/or Fortified BFBs, up to Round 100: Rounds 62, 75, 79, 82, 86, 89, 92, 93, 96, 97, and 98.
    • Round 97 has Fortified ZOMGs, but popping the ZOMG layers will open Fortified BFBs, to which the Shattering Shells can remove.
  • On ABR, there are 34 rounds that contain Fortified MOABs and/or Fortified BFBs, up to 100: Rounds 40, 50, 52, 53, 55, 57, 60, 62, 65, 67, 68, 70, 71, 72, 73, 74, 75, 77, 78, 79, 81, 82, 83, 86, 88, 89, 91, 92, 93, 95, 96, 97, 98, 100.
    • Rounds 97 and 100 contain Fortified ZOMGs and the Fortified BAD, respectively, and both contain Fortified BFB offspring that the Shattering Shells can defortify (though for the Fortified BAD, the Fortified ZOMGs must be popped to open Fortified BFBs).
    • Because there are a lot of Fortified Bloons in Alternate Bloons Rounds, Shattering Shells is very strong in this game mode.

Version History[]

Since its introduction in the game, Shattering Shells plays an important role for reducing the strength of late-game Fortified rounds. Overall, it has been nerfed very slightly, with the only major nerf being a slight price increase.

  • Description changed from "All special Bloon properties are destroyed off each Bloon struck by the shattering shells." to "Shattering shells strip all bloon properties off all but the biggest bloons."
  • Change Stripped Fortified Bloon health of the current layer now adds to the damage count.
  • Nerf Cost of Shattering Shells has increased ($10,000 → $11,000).
  • Buff Attack speed without Path 2 upgrades increased (2.2s → 2.0s).
  • Buff Attack speed with Faster Reload increased (1.54s → 1.25s).
  • Nerf Attack speed with Rapid Reload decreased (1.07s → 1.08s), due to Mortar Monkey attack speed reworks.
  • Change Stripped Fortified Bloon health of all layers now adds to the damage count, not just the current layer.
[...] Signal Flare has had its camo revealing aspect reworked to make it more generally useful.
~ Ninja Kiwi, referring to Signal Flare
  • Buff [Undocumented] Shattering Shells no longer requires Paint Stripper to remove DDT camo properties. Inherited from the Signal Flare buff.
Bottom path Mortar burns have been reworked to burn faster and last longer at all upgrades; the Extra Burny Stuff MK has been tweaked in order to keep it's [sic] benefit the same comparatively to the new & improved base values.
~ Ninja Kiwi
  • Buff Burny Stuff DoT duration increased from 3s -> 3.75s
  • Buff Burny Stuff DoT tic interval reduced from 1.25s -> 1.25s
  • Nerf MK: Extra Burny Stuff buff amount reduced 0.5s -> 0.25s
  • Nerf [Undocumented] Now requires Paint Stripper Monkey Knowledge to decamo DDTs
  • Buff [Undocumented, possibly a bug] Paint Stripper allows Shattering Shells to defortify DDTs
  • Buff Affected by 1-0-3 Signal Flare gaining bigger decamo blast


Official artwork[]


  • Shattering Shells, alongside its subsequent upgrade Blooncineration, are the only versions of the Mortar Monkey which fire using non-cylindrical mortars.
  • In Bloons Monkey City and its mobile version, the Signal Flare upgrade with certain Monkey Knowledge Packs can remove regrow properties. It is likely Shattering Shells removing regrow properties was inspired by this feature from Bloons Monkey City.
  • Shattering Shells initially did not add stripped Fortified Bloon health to its damage counter. This feature has since been added in Version 8.0.
    • Prior to Version 23.0, only the fortified health stripped off was added to the total counter, but this formerly did not include the blimp children.
      • Before the change, if a Shattering Shells defortified all Fortified BFBs on Round 98, it would have gained around +32,640 damage count (as all 30 Fortified BFBs on Round 98 have roughly 2176 health each for their outer layers, and defortifying them strips up to 1088 health each).
      • Since Version 23.0, since the total Fortified health stripped off the four descendant Fortified MOABs and 16 descendant Fortified Ceramics, and extra +2048 damage count is added per Round 98 Fortified BFB stripped. The total damage count gain for defortifying all 30 Fortified BFBs now becomes +94,080.
  • Between Version 9.0-11.2, Shattering Shells had the greatest proportional price gap for a Tier-4 upgrade compared to the preceding upgrade (Signal Flare costs $700, but Shattering Shells costs $11,000, 15.7x more expensive in comparison).
    • Prior to the Shattering Shells price nerf, Shattering Shells was 14.3x more expensive than Signal Flare.
    • However, with the release of Engineer Monkey in Version 12.0, Overclock versus Cleansing Foam currently has the greatest proportional price gap for a Tier-4 upgrade compared to the preceding upgrade; Overclock is 16.87x more expensive than Cleansing Foam ($13,500 compared to $800). Since then, Shattering Shells had the second-greatest proportional price gap, later demoting in such ranking.
      • Interestingly, both Tier-3 upgrades mentioned are both camo detection upgrades. They are also two of three Tier-3 upgrades to grant camo detection to the respective tower, the other being Submerge and Support.
    • Bomber Ace and Ground Zero had the greatest price difference until Version 9.0, at 28x, but again resumed in 30.0, at 20x.