ZOMGinator is an unlockable achievement in Bloons TD 5 Mobile and Bloons Monkey City. It is unlocked by destroying 1,000 Z.O.M.G.s in the mobile version or by destroying 10,000 Z.O.M.G.s in Bloons Monkey City. An easy way to unlock this on mobile is to play in Freeplay Mode or Apopalypse Mode for a long time. It is one of the highest class of all bloons.
ZOMGinator is also an achievement in Bloons TD 6. It is unlocked by destroying 5,000 Z.O.M.G.s.