Spooky Castle is a Halloween-themed track added to BTD5 on October 14, 2015.
Its looks is very similar to the track Castle except that it has an animated background, does not have a Sun God face on the castle and takes place at night. This track has two entrances and exits. The Bloons come from the back of the castle on one path and the Bloons come from the front-right of the castle on the other path. There are animated bare trees and creepy faces on the water. The path glows and there are a few pumpkins on the castle and the land around it. The walls are also thicker than the ones in Castle.
|Spooky Castle Bronze||10|
|Spooky Castle Silver||25|
|Spooky Castle Gold||50|
- Spooky Castle is currently the latest track that includes the "volcano theme" music, which is also heard when playing tracks such as Fireworks, Lava Fields, Mount Magma, Lightning Scar or Clock.