MOAB Mauler is an achievement for Bloons TD 4 iOS. It is awarded for popping 500 M.O.A.B. Class Bloons. Playing the game in Freeplay Mode is one of the recommended ways to earn this achievement. Playing challenges with many M.O.A.B.s and B.F.B.s is another way to do so.
Moab Mauler is also an achievement in Bloons Monkey City. It is unlocked when the player destroys 1,000 M.O.A.B's and gives the player 50.