Surprise

Surprise is the 3rd level of Bloons. 

Completion
Completing this level requires aiming at the center Tack Bloons and then the bloons around the removed center.

Trivia

 * Tack Bloon makes its first appearance in this level.
 * This is where the name "Surprise" comes from, as these are the first 'special' bloon types encountered.
 * It also makes its first appearance in the entire franchise.
 * The Bloons "form" an octagon with 2 Tack Bloons in the middle.