Round 1-100 with Ice + Village!
Bloons Tower Defense 6 / Bloons TD 6 - round 1-100 with ice + village + farm only! So this makes for a crazy challenge, and doesn't even seem possible until you consider the insane popping power that icicle impale and primary expertise have. But the hard part is being able to afford all of that, especially when you consider that white bloons come on round 22, and the first MOAB shows up on round 40. Enjoy!