Monkey Sub (BTD6)

Monkey Sub iterations: BTD5 • Battles • BMC • BTD6 • Battles 2

Monkey Sub

Shoots homing torp-e-darts at nearby Bloons. Must be placed in water.

Unlock method(s)	Choose at levels 7–12
Category	Military
Cost	$275 — Easy $325 — Medium $350 — Hard $390 — Impoppable With Advanced Logistics: $260 — Easy $310 — Medium $335 — Hard $370 — Impoppable With Military Conscription: $185 — Easy $220 — Medium $235 — Hard $260 — Impoppable With Advanced Logistics and Military Conscription: $170 — Easy $200 — Medium $220 — Hard $240 — Impoppable
Hotkey	X
Introduced	Launch

The Monkey Sub is a Military tower in Bloons TD 6. It attacks by firing seeking darts that each pop up to 2 Bloons. It attacks every 0.75s and has decent range. Like the Monkey Buccaneer, it can only be placed on water. It can be upgraded to submerge, stopping attacks but offering a variety of support, shoot different types of missiles, or buff the dart attack.

Upgrades

Path 1

Longer Range XP cost: 125
	Increases attack range. Easy Medium Hard Impoppable $110 $130 $140 $155

Advanced Intel XP cost: 750
	Allows long range targeting of Bloons in radius of your other towers. Easy Medium Hard Impoppable $425 $500 $540 $600

Submerge and Support XP cost: 2,250
	Adds Submerge targeting option that permanently reveals Camo Bloons in its radius but does not attack while submerged. Easy Medium Hard Impoppable $595 $700 $755 $840

Bloontonium Reactor XP cost: 11,000
	Submerge to detect Camo, pop Bloons and reduce ability cooldowns of nearby water-based Monkeys by 15%. Easy Medium Hard Impoppable $2,040 $2,400 $2,590 $2,880

Energizer XP cost: 33,000
	Reduces ability cooldowns everywhere by 20% and by 40% for Water based Monkeys. While in radius, Heroes earn XP 50% faster. Easy Medium Hard Impoppable $23,800 $28,000 $30,240 $33,600

Path 2

Barbed Darts XP cost: 130
	Sub's darts can pop an additional 3 Bloons. Enhances pierce of other weapons. Easy Medium Hard Impoppable $380 $450 $485 $540

Heat-tipped Darts XP cost: 600
	Heat tipped darts allow the Monkey Sub to pop Frozen and Lead Bloons. Easy Medium Hard Impoppable $255 $300 $325 $360

Ballistic Missile XP cost: 3,000
	Fires missiles at targets within range. Missiles fly over walls and deal extra damage to MOABs and Ceramics. Easy Medium Hard Impoppable $1,145 $1,350 $1,460 $1,620

First Strike Capability XP cost: 20,000
	First Strike Ability: A devastating missile strike targeting the largest Bloon on screen, plus splash damage. Easy Medium Hard Impoppable $11,050 $13,000 $14,040 $15,600

Pre-emptive Strike XP cost: 45,000
	Automatically triggers a powerful missile attack whenever MOAB-Class Bloon spawns from the Bloon entrance. Easy Medium Hard Impoppable $24,650 $29,000 $31,320 $34,800

Path 3

Twin Guns XP cost: 150
	Added twin gun doubles attack speed, and enhances attack speed of other weapons. Easy Medium Hard Impoppable $380 $450 $485 $540

Airburst Darts XP cost: 1,000
	Airburst darts split into 3 on impact for massive popping power. Easy Medium Hard Impoppable $850 $1,000 $1,080 $1,200

Triple Guns XP cost: 2,750
	Adds a third gun for even faster firing. Easy Medium Hard Impoppable $935 $1,100 $1,190 $1,320

Armor Piercing Darts XP cost: 10,000
	Special AP darts gain increased damage and popping power, plus additional damage to Fortified and MOAB class Bloons. Easy Medium Hard Impoppable $2,125 $2,500 $2,700 $3,000

Sub Commander XP cost: 25,000
	Adds extra pierce and damage to Commander and all Subs in its radius. Easy Medium Hard Impoppable $21,250 $25,000 $27,000 $30,000

Paragon

Nautic Siege Core XP cost: 1,000,000
	Unfathomable range, power, and synergies with other Monkey Towers and Heroes put all Bloons under assault. Easy Medium Hard Impoppable $340,000 $400,000 $432,000 $480,000

Stats

For a complete list of Monkey Sub stats, see Stats:Monkey Sub (BTD6).

This data was last updated for: version 55.1

Tower
Display range 42 units Footprint radius 7 units Targeting options First Last Close Strong

Attack
Cooldown 0.75s Offset (X, Y, Z) 0, 16, 8.5 Targeting Depends on targeting option Targeting range 42 units Filters Cannot target Camo
Projectile Pierce 2 Damage 1 Damage type Sharp Speed 170 units/s Seeking distance ∞ units Seeking angle 180° Seeking rotation speed 360 °/s Lifespan 1.5s Radius 2 units Filters Cannot hit Camo

Related Monkey Knowledge

This list does not include Monkey Knowledge that affects all Military towers.

Monkey Knowledge	Cost	Prerequisites	Introduced
Naval Upgrades Monkey Buccaneer and Monkey Sub get +1 pierce per shot.	Free	—	Launch
Breaking Ballistic Ballistic Missiles do more damage to Ceramic Bloons.	Free	4 invested Naval Upgrades	Launch
Quad Burst Airburst Darts split into 4 instead of 3.	250	8 invested Breaking Ballistic	Launch
Flanking Maneuvers Sniper, Monkey Sub, & Monkey Buccaneer attack 10% faster when set to 'Last' targeting priority.	500	8 invested Quad Burst Trade Agreements	Version 22.0
Sub Admiral Sub Commander affects all Monkey Subs on screen.	1,000	14 invested Flanking Maneuvers	Launch

Rogue Legends

Starter parties with Monkey Subs

Item	Insta Monkey 1	Insta Monkey 2	Artifact
Admiral Brickell	1-0-1 Monkey Sub	0-2-1 Monkey Buccaneer	Portability Common
Sushi Bento	0-0-2 Monkey Sub	0-2-0 Dart Monkey	Mighty Mulligan Legendary

Artifacts that add Monkey Subs

Artifact	Common	Rare	Legendary
Corrosive Torp-E-Darts	0-1-1 Monkey Sub	0-2-1 Monkey Sub	0-2-0 Monkey Sub

Artifacts that affect Monkey Subs

This list does not include Artifacts that affect all Military towers.

Artifact	Common effect	Rare effect	Legendary effect
Corrosive Torp-E-Darts	Tier 3 and higher Monkey Subs glue Bloons with Bloon Dissolver acid for a short time. Adds a 0-1-1 Monkey Sub to your Party	Tier 3 and higher Monkey Subs glue Bloons with Bloon Liquifier acid for a short time. Adds a 0-2-1 Monkey Sub to your Party	Tier 3 and higher Monkey Subs glue Bloons with Bloon Solver acid for a short time. Adds a 0-2-0 Monkey Sub to your Party
Dream Teams	Monkey Subs, Ninja Monkeys, Druids, Wizards, and Beast Handlers attack speed and ability cooldowns are 11% faster, get 20% more range, and placement cooldown reduced 1 round(s)	Monkey Subs, Ninja Monkeys, Druids, Wizards, and Beast Handlers attack speed and ability cooldowns are 11% faster, get 25% more range, and placement cooldown reduced 1 round(s)	Monkey Subs, Ninja Monkeys, Druids, Wizards, and Beast Handlers attack speed and ability cooldowns are 11% faster, get 35% more range, and placement cooldown reduced 2 round(s)
Summer Fun	—	Admiral Brickell and tier 2 or lower Buccaneers and Monkey Subs have a rare chance to attract excited summer vibes Monkeys that will push Bloons up to MOABs back along the track. Adds a 0-1-2 Buccaneer to your Party	Admiral Brickell and tier 2 or lower Buccaneers and Monkey Subs have a rare chance to attract excited summer vibes Monkeys that will push Bloons up to ZOMGs back along the track. Adds a 0-0-2 Buccaneer to your Party

Costs and sell values

Note: this list does not factor in Monkey Knowledge or other discounts.

Tiers	Total cost				Sell value
	Easy	Medium	Hard	Impoppable	Easy	Medium	Hard	Impoppable
0-0-0	$275	$325	$350	$390	$193	$228	$245	$273
1-0-0	$385	$455	$490	$545	$270	$319	$343	$382
1-1-0	$765	$905	$975	$1,085	$536	$634	$683	$760
1-0-1	$765	$905	$975	$1,085	$536	$634	$683	$760
0-1-0	$655	$775	$835	$930	$459	$543	$585	$651
0-1-1	$1,035	$1,225	$1,320	$1,470	$725	$858	$924	$1,029
0-0-1	$655	$775	$835	$930	$459	$543	$585	$651
2-0-0	$810	$955	$1,030	$1,145	$567	$669	$721	$802
2-1-0	$1,190	$1,405	$1,515	$1,685	$833	$984	$1,061	$1,180
2-2-0	$1,445	$1,705	$1,840	$2,045	$1,012	$1,194	$1,288	$1,432
2-0-1	$1,190	$1,405	$1,515	$1,685	$833	$984	$1,061	$1,180
2-0-2	$2,040	$2,405	$2,595	$2,885	$1,428	$1,684	$1,817	$2,020
0-2-0	$910	$1,075	$1,160	$1,290	$637	$753	$812	$903
1-2-0	$1,020	$1,205	$1,300	$1,445	$714	$844	$910	$1,012
0-2-1	$1,290	$1,525	$1,645	$1,830	$903	$1,068	$1,152	$1,281
0-2-2	$2,140	$2,525	$2,725	$3,030	$1,498	$1,768	$1,908	$2,121
0-0-2	$1,505	$1,775	$1,915	$2,130	$1,054	$1,243	$1,341	$1,491
1-0-2	$1,615	$1,905	$2,055	$2,285	$1,131	$1,334	$1,439	$1,600
0-1-2	$1,885	$2,225	$2,400	$2,670	$1,320	$1,558	$1,680	$1,869
3-0-0	$1,405	$1,655	$1,785	$1,985	$984	$1,159	$1,250	$1,390
3-1-0	$1,785	$2,105	$2,270	$2,525	$1,250	$1,474	$1,589	$1,768
3-2-0	$2,040	$2,405	$2,595	$2,885	$1,428	$1,684	$1,817	$2,020
3-0-1	$1,785	$2,105	$2,270	$2,525	$1,250	$1,474	$1,589	$1,768
3-0-2	$2,635	$3,105	$3,350	$3,725	$1,845	$2,174	$2,345	$2,608
0-3-0	$2,055	$2,425	$2,620	$2,910	$1,439	$1,698	$1,834	$2,037
1-3-0	$2,165	$2,555	$2,760	$3,065	$1,516	$1,789	$1,932	$2,146
2-3-0	$2,590	$3,055	$3,300	$3,665	$1,813	$2,139	$2,310	$2,566
0-3-1	$2,435	$2,875	$3,105	$3,450	$1,705	$2,013	$2,174	$2,415
0-3-2	$3,285	$3,875	$4,185	$4,650	$2,300	$2,713	$2,930	$3,255
0-0-3	$2,440	$2,875	$3,105	$3,450	$1,708	$2,013	$2,174	$2,415
1-0-3	$2,550	$3,005	$3,245	$3,605	$1,785	$2,104	$2,272	$2,524
2-0-3	$2,975	$3,505	$3,785	$4,205	$2,083	$2,454	$2,650	$2,944
0-1-3	$2,820	$3,325	$3,590	$3,990	$1,974	$2,328	$2,513	$2,793
0-2-3	$3,075	$3,625	$3,915	$4,350	$2,153	$2,538	$2,741	$3,045
4-0-0	$3,445	$4,055	$4,375	$4,865	$2,412	$2,839	$3,063	$3,406
4-1-0	$3,825	$4,505	$4,860	$5,405	$2,678	$3,154	$3,402	$3,784
4-2-0	$4,080	$4,805	$5,185	$5,765	$2,856	$3,364	$3,630	$4,036
4-0-1	$3,825	$4,505	$4,860	$5,405	$2,678	$3,154	$3,402	$3,784
4-0-2	$4,675	$5,505	$5,940	$6,605	$3,273	$3,854	$4,158	$4,624
0-4-0	$13,105	$15,425	$16,660	$18,510	$9,174	$10,798	$11,662	$12,957
1-4-0	$13,215	$15,555	$16,800	$18,665	$9,251	$10,889	$11,760	$13,066
2-4-0	$13,640	$16,055	$17,340	$19,265	$9,548	$11,239	$12,138	$13,486
0-4-1	$13,485	$15,875	$17,145	$19,050	$9,440	$11,113	$12,002	$13,335
0-4-2	$14,335	$16,875	$18,225	$20,250	$10,035	$11,813	$12,758	$14,175
0-0-4	$4,565	$5,375	$5,805	$6,450	$3,196	$3,763	$4,064	$4,515
1-0-4	$4,675	$5,505	$5,945	$6,605	$3,273	$3,854	$4,162	$4,624
2-0-4	$5,100	$6,005	$6,485	$7,205	$3,570	$4,204	$4,540	$5,044
0-1-4	$4,945	$5,825	$6,290	$6,990	$3,462	$4,078	$4,403	$4,893
0-2-4	$5,200	$6,125	$6,615	$7,350	$3,640	$4,288	$4,631	$5,145
5-0-0	$27,245	$32,055	$34,615	$38,465	$19,072	$22,439	$24,231	$26,926
5-1-0	$27,625	$32,505	$35,100	$39,005	$19,338	$22,754	$24,570	$27,304
5-2-0	$27,880	$32,805	$35,425	$39,365	$19,516	$22,964	$24,798	$27,556
5-0-1	$27,625	$32,505	$35,100	$39,005	$19,338	$22,754	$24,570	$27,304
5-0-2	$28,475	$33,505	$36,180	$40,205	$19,933	$23,454	$25,326	$28,144
0-5-0	$37,755	$44,425	$47,980	$53,310	$26,429	$31,098	$33,586	$37,317
1-5-0	$37,865	$44,555	$48,120	$53,465	$26,506	$31,189	$33,684	$37,426
2-5-0	$38,290	$45,055	$48,660	$54,065	$26,803	$31,539	$34,062	$37,846
0-5-1	$38,135	$44,875	$48,465	$53,850	$26,695	$31,413	$33,926	$37,695
0-5-2	$38,985	$45,875	$49,545	$55,050	$27,290	$32,113	$34,682	$38,535
0-0-5	$25,815	$30,375	$32,805	$36,450	$18,071	$21,263	$22,964	$25,515
1-0-5	$25,925	$30,505	$32,945	$36,605	$18,148	$21,354	$23,062	$25,624
2-0-5	$26,350	$31,005	$33,485	$37,205	$18,445	$21,704	$23,440	$26,044
0-1-5	$26,195	$30,825	$33,290	$36,990	$18,337	$21,578	$23,303	$25,893
0-2-5	$26,450	$31,125	$33,615	$37,350	$18,515	$21,788	$23,531	$26,145

Strategy

For more in-depth strategies, see Strategy:Monkey Sub (BTD6).

Monkey Subs are most notable early game for their homing projectiles and range. Dart + Sub starts work on many maps, including Ouch and Bloody Puddles, and a solo Sub start works on Flooded Valley and Erosion. However, since dart homing is hard to predict, making these starts work can be frustrating on harder maps.

Early game Subs generally build towards 2-0-2, using their homing and global range to handle early game rounds, with bottom path upgrades improving the tower's single target DPS and cleanup abilities. Use with a Berserker Brew for double damage and pierce. Submerge and Support is consistent, high-pierce decamo as well.

Later on, Energizer is common with Heroes that appreciate faster leveling and abilities such as Admiral Brickell and Psi, while Pre-emptive Strike is useful with Silas due to effectively covering DDTs and the BAD. Sub Commander struggles late game compared to more efficient options, and is especially weak to Super Ceramics. First Strike Capability can be used to layerskip the BAD's insides if it is sufficiently damaged first.

Update history

For a complete list of Monkey Sub changes, see Update history:Monkey Sub (BTD6).

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Version 7.0

•  Dart: pierce increased by 1
  • Note: Does not affect Airburst Darts and above

Version 45.0

• No longer displays a Paragon pip without all tier 5 upgrades unlocked (bug fix)

Cosmetic items

Item	Category	Unlock method(s)	Introduced
Monkey Sub Rubber Ducky Pet	Monkeys — Pets	Trophy Store —  75, Prime Gaming drop 4, Pets Fan Pack (IAP)	Version 21.0

Gallery

For more Monkey Sub images, see Gallery:Monkey Sub.

Screenshots

This section needs more screenshots. See the screenshot guidelines for more information on what screenshots are needed and how to add them.

• 
  All upgrade combinations

Assets

• 
  Portrait
• 
  Insta Monkey icon

In other languages

This section was last updated for: version 49.2

Name

Language	Text	Notes
Arabic	القرد الغواص	—
Danish	Abe-ubåd	—
German	Affen-U-Boot	—
Spanish	Submonino	—
Spanish (Latin America)	Submonino	—
Finnish	Sukellusvene	—
French	Singe en sous-marin	—
Italian	Sommergibile	—
Japanese	モンキー潜水艦	—
Korean	멍키 잠수함	—
Dutch	Onderzeeëraap	—
Norwegian	Ape-ubåt	—
Polish	Małpka podwodna	—
Portuguese (Brazil)	Macaco Sub	—
Russian	Подводник	—
Swedish	Apubåt	—
Thai	ลิงเรือดำน้ำ	—
Turkish	Maymun Denizaltı	—
Chinese (simplified)	猴子潜艇	—
Chinese (traditional)	猴子潛艇	—

Description

Language	Text	Notes
Arabic	يقوم بإطلاق طوربيد سهمي على البالونات القريبة. يجب وضعه في الماء.	—
Danish	Affyrer søgende torp-e-dartpile mod bloons i nærheden. Skal stationeres i vand.	—
German	Verschießt zielsuchende Torpedarts auf Bloons in der Nähe. Muss in Wasser platziert werden.	—
Spanish	Dispara torpedardos rastreadores a los bloons cercanos. Solo se puede usar en el agua.	—
Spanish (Latin America)	Dispara torpedardos rastreadores a los bloons cercanos. Solo se puede usar en el agua.	—
Finnish	Ampuu ohjautuvia torpedotikkoja lähellä oleviin blooneihin. Asetettava veteen.	—
French	Lance des fléchettes-torpilles à têtes chercheuses sur les Bloons à proximité. Doit être placé dans l'eau.	—
Italian	È in grado di lanciare freccette cerca bersaglio contro i bloon vicini. Va collocata in acqua.	—
Japanese	近くのブルーンに向けて、自動誘導魚雷型ダーツを撃つ。水の中に設置しなければならない。	—
Korean	주변의 풍선을 향해 유도 다트를 발사합니다. 물에 배치해야 합니다.	—
Dutch	Schiet doelzoekende torpedopijltjes af naar nabijgelegen Bloons. Moet in water worden geplaatst.	—
Norwegian	Skyter torp-e-dartpiler på bloons i nærheten. Må plasseres i vann.	—
Polish	Strzela samosterującymi torpe-rzutkami w najbliższe blony. Musi być umieszczona w wodzie.	—
Portuguese (Brazil)	Dispara torpedardos teleguiados contra Bloons próximos. Precisa ser posto na água.	—
Russian	Стреляет самонаводящимися дроторпедами по шарам поблизости. Работает только в воде.	—
Swedish	Skjuter målsökande torpedpilar på Bloons i närheten. Måste placeras i vatten.	—
Thai	ยิงตอร์ปิดาร์ทแบบติดตามเป้าหมายใส่ลูกโป่งที่อยู่ใกล้เคียง ต้องวางในน้ำเท่านั้น	—
Turkish	Yakındaki Bloon’lara öz güdümlü torp-id-oklar fırlatır. Suya yerleştirilmesi gerekir.	—
Chinese (simplified)	向附近的气球发射制导飞镖。必须放在水中。	—
Chinese (traditional)	向附近氣球射出追蹤魚雷飛鏢。必須放在水中。	—