Adventures

Adventures are a set of tracks in an area in Ooo. They have a difficulty rating, showing the general difficulty of the entire adventure. The tracks themselves have a difficulty rating too. All difficulties have a chest that can be unlocked if all maps are cleared in the specified difficulty. The player is not required to do this immediately, they can clear them in any difficulty and then clear the required difficulties for the chests.

In all, there are 41 free-to-play tracks and 53 tracks in all.

Bloons!

 * Treefort Exterior
 * Normal is the only playable difficulty here and lasts 5 rounds.

Cyclops
Requires "Burning Rubber" to be cleared.
 * Path Choice
 * River Run
 * Teardrops

Dungeon Train
Requires Dungeon Finn to be purchased. Clearing this provides Train Boss.
 * All Aboard
 * Train Armory
 * Crystal Ants
 * Infinity

Apple Thief

 * Tree Trunks' House
 * Apple Forest

Winter is Coming
Clearing this adventure unlocks Ice King.
 * Snow Plains
 * Ice King's Throne Room

Jake and the Lady
Requires Tuxedo Jake to be purchased. Clearing this provides Lady Rainicorn.
 * Picnic Time
 * Pizza Sassy's
 * Make Out Point
 * Lady's House

Candy Cornered

 * Candy Throne Room
 * The Normal difficulty here lasts 10 rounds.
 * Enchiridion
 * The Normal difficulty here lasts 12 rounds.

Necro Candy
Requires "Winter is Coming" to be cleared. Clearing this in the Hard difficulty only unlocks Warrior Bubblegum
 * Candy Fountain
 * Candy Forest
 * Candy Graveyard