Ancient Portal

Ancient Portal

Difficulty	Intermediate
Music	Haunted House
Default Co-op division	Free-for-all
Introduced	Version 45.0
Entrances	1	Exits	2
Junctions	1	Water?	Yes

Removables and gizmos
Realign Portal: $0 (×1)

Path lengths (RBS)
Path		Easy	Medium	Hard
Left		25.0	22.7	20.0
Right		19.6	17.8	15.7

Ancient Portal is an Intermediate map in Bloons TD 6, introduced in version 45.0. It takes place in a nighttime landscape with portals controlled by a monkey near the bottom.

Layout

Ancient Portal has one entrance, but can exit on one of two different paths, depending on which portal is open. The Bloons enter from the top-right and move in a spiral into a portal that teleports them to the active exit path. The straight path that exits on the right is slightly shorter than the one on the left, but it has no line-of-sight blocker with the entrance, meaning towers can attack both paths. It also has a small lake for water towers near it. The curved path that exits on the left is slightly longer than the one on the right, but is completely surrounded by line of sight blockers.

Boss Bloons take a unique route where they spawn near the bottom-right exit and move on the path in reverse, pass over both portal exits without teleporting, and continue moving to the exit on the bottom-left path.

Mechanics

Portal realignment

Selecting the device at the bottom displays the option to "Realign Portal", which changes which side the portal connects to. By default, it connects to the right side. Realigning the portal is free, but there is a 10-second cooldown between uses. This does not affect the route that Boss Bloons take.

Hero pedestals

There are four pedestals with crescent symbols on them, each of which grants two different buffs to Heroes placed on them (not any other towers). The pedestal in the water can affect non-water Heroes placed on it using a terrain modifier, such as Arctic Wind, but not platforms on towers like Pontoon or Carrier Flagship.

Pedestal location	Buff #1	Buff #2
Topmost, near the entrance	Camo detection	Monkey Intelligence Bureau
Second from the top, below the spiral	Damage (+1)	Range (+30%)
Inside the pond	Ability cooldown (-25%)	Hero XP (+25%)
Inside the ruins	Attack cooldown (-30%)	Pierce (+2)

Totems

Popping Bloons within 70 units of the top-right portal charges up the totems next to them. The number of cracked bricks that are lit up indicates the current level of charge. It takes 15,000 pops to fully charge, but popping multiple layers in a single hit only counts as one pop. When fully charged, selecting the totems generates an explosion that deals 50 damage to all Bloons on-screen and stuns them for 9 seconds, then resets their charge.

Strategy

This section was last updated for: version 54.0

Ancient Portal is a middle-of-the-road Intermediate. This is due to being a single-lane map, the long length of the top-right to bottom-left path, the flexibility of strategy options due to the interchangeable lanes, the bends on the top-right and bottom-left, the wide coverage of the top-right and bottom-right achieved by towers between them, and the pedestals' powerful buffs to heroes. Ancient Portal can be beaten with relative ease using general guidelines below.

• Basic Deflation strategies
• Basic Apopalypse strategies
• Basic Half Cash strategies
• Basic Alternate Bloons Rounds strategies
• Basic Impoppable strategies
• Basic CHIMPS strategies

The unique layout of Ancient Portal, with many bends and 2 entirely separated parts of one lane, allows certain strategies (listed below) to excel.

Recommended towers and upgrades

Name	Portrait	Reasoning
Pop and Awe		The many bends on both the top-right and bottom-left is optimal for Pop and Awe. Align the portal to teleport Bloons to the left if using Pop and Awe, as the longer track length and ability to retarget to the bends there enhance Pop and Awe's power further. It deals colossal damage, especially when paired with Striker Jones and Relentless Glue's stun bonuses. Use First Strike Capability or Spike Storm to cover Pop and Awe's weakness against the BAD.
Perma-Spike		The single-lane nature of this map and relatively long track length aid Perma-Spike greatly. It effectively guarantees victory by tanking the Bloons that towers may leak, in addition to covering the DDT weakness of towers such as Pop and Awe.
Overdrive, The Tack Zone		The abundance of bends greatly enhance Overdrive and Tack Zone's power. When placed near a bend, they do solid damage throughout the mid-game and late-game. Use Geraldo, Embrittlement, Berserker Brew, and Primary Training to further maximize their damage.

Update history

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Version 48.0

•  The damage of the totems does not increase by round number (undocumented) (bug)

Version 54.0

• Map difficulty changed ― Advanced → Intermediate
• Sauda's Sword Charge and Corvus' Trample should now affect both tracks (bug fix)

Gallery

• 
  Easter theme
• 
  Fireworks theme
• 
  Halloween theme
• 
  Holiday theme
• 
  Island statue
• 
  Ability cooldown buff icon
• 
  Hero XP buff icon

In other languages

This section was last updated for: version 48.1

Language	Text	Notes
Arabic	البوابة القديمة	—
Danish	Oldgamle portal	—
German	Uraltes Portal	—
Spanish	Portal antiguo	—
Spanish (Latin America)	Portal antiguo	—
Finnish	Muinainen portaali	—
French	Portail ancien	—
Italian	Portale ancestrale	—
Japanese	いにしえのポータル	—
Korean	고대의 차원문	—
Dutch	Oeroud portaal	—
Norwegian	Urgammel portal	—
Polish	Pradawny portal	—
Portuguese (Brazil)	Portal Antigo	—
Russian	Древний портал	—
Swedish	Urgammal Portal	—
Thai	ประตูโบราณ	—
Turkish	Kadim Portal	—
Chinese (simplified)	古代传送门	—
Chinese (traditional)	古代傳送門	—

Trivia

• Ancient Portal is the first and currently only map in Bloons TD 6 that changed to a different map difficulty in an update, switching from Advanced to Intermediate in version 54.0.

References

• Path lengths sourced from the BTD6 Index

Navigation

v • t • e Maps in Bloons TD 6
Beginner Monkey Meadow • In The Loop • Skull Tweak • Three Mines 'Round • Spa Pits • Tinkerton • Tree Stump • Town Center • Middle of the Road • One Two Tree • Scrapyard • The Cabin • Resort • Skates • Lotus Island • Candy Falls • Winter Park • Carved • Park Path • Alpine Run • Frozen Over • Cubism • Four Circles • Hedge • End Of The Road • Logs Intermediate Lost Crevasse • Luminous Cove • Ancient Portal • Sulfur Springs • Water Park • Polyphemus • Covered Garden • Quarry • Quiet Street • Bloonarius Prime • Balance • Encrypted • Bazaar • Adora's Temple • Spring Spring • KartsNDarts • Moon Landing • Haunted • Downstream • Firing Range • Cracked • Streambed • Chutes • Rake • Spice Islands • Protect The Yacht* Advanced Ascent • Mushroom Grotto • Party Parade • Sunset Gulch • Enchanted Glade • Last Resort • Castle Revenge • Dark Path • Erosion • Midnight Mansion • Sunken Columns • X Factor • Mesa • Geared • Spillway • Cargo • Pat's Pond • Peninsula • High Finance • Another Brick • Off The Coast • Cornfield • Underground Expert Tricky Tracks • Glacial Trail • Dark Dungeons • Sanctuary • Ravine • Flooded Valley • Infernal • Bloody Puddles • Workshop • Quad • Dark Castle • Muddy Puddles • #Ouch • Blons*
* Not playable in standard solo or Co-op play