Sweet Tooth

Sweet Tooth, also known as Lollipop Track or Lollipops, is a beginner track initially from Bloons Tower Defense 4. It was added in an April Update on April 14, 2011. It later reappeared in Bloons Tower Defense 4 iOS with version 1.9 on June 10, 2011 and in Bloons Tower Defense 4 HD with version 1.5 on June 14, 2011.

Layout
Sweet Tooth's layout goes around the outline of the two lollipops. Sweet Tooth has one entrance and one exit, with the entrance being at the bottom of the rainbow lollipop, and the exit being at the bottom of the red and white lollipop. The bloons will first come up and do a full loop around the rainbow lollipop. After this, they'll go around the red and white lollipop until they meet its stick, which they go down to the exit. This track doesn't feature any water. Oddly enough, the player can place towers on the candyland background.

Appearance
Sweet Tooth takes place on two lollipops. The leftmost lollipop has a rainbow pattern, while the rightmost has a red and white pattern. In the background is a candyland with a bright blue sky and candy mountains. There's a darkened path going around the lollipops, representing the path that the bloons follow.

In Bloons Tower Defense 4 iOS, Sweet Tooth returned. With this came some slight changes. The rainbow lollipop's center is much larger than before, and the red and white lollipop has less of a swirl. They both seem to be more vibrant than their original versions. Due to the screen being bigger, the background is slightly extended. Also, the path showing where the bloons go is much lighter than before.

In Bloons Tower Defense 4 HD, Sweet Tooth appears once again. It has a practically identical look compared to Bloons Tower Defense 4 iOS.