The Swamp is a location in the Frontier Legends DLC for Bloons TD 6. It is a swamp area located southeast of Great Oak Village past Muddy Passage. Like the latter, this area is filled with Roaming Bloons, grass, small water bodies, and Bananite crystals, predominantly in the north section of the map. Also, players can find the ruins of a temple resembling Encrypted in the center and an abandoned mansion in the northeast corner of the area. In the story, Sheriff and Scout explore the area trying to find a tunnel underground, and as they investigate, they are joined by a Necromancer, who leads them to the Crypts beneath the temple's ruins, where they find the tunnel they have been searching for.