Rounds
Round 121
Round 121 in BTD6: 14 Fortified BFBs, 28 Fortified MOABs and 6 Fortified ZOMGs. Cash drops to 4% per pop. How to beat it.
Guide
Round 121 sends three Fortified waves in 15 seconds: 14 Fortified BFBs, then 28 Fortified MOABs, then six Fortified ZOMGs. Everything in the round is Fortified.
At ×2.45 ramping, Fortified ZOMGs have about 19,600 health, Fortified BFBs about 3,430 and Fortified MOABs about 980. From this round, cash per pop drops from 5% to 4%, so the round pays about $2,745 from pops plus a $221 bonus. RBE is 516,500.
Bloons in round 121
- 14 × BFB (Fortified) (0–5 s)
- 28 × MOAB (Fortified) (5–10 s)
- 6 × ZOMG (Fortified) (10–15 s)
How to beat round 121
The Fortified ZOMGs come last, so build around them.
- Clear the BFB and MOAB waves with area blimp damage so your single-target towers are free when the ZOMGs arrive after 10 seconds.
- Save abilities for the six Fortified ZOMGs, which together have well over 100,000 health on their outer layers.
- Slow them with Maim MOAB, Super Glue or MOAB Glue.
Alternate Bloons Rounds
The Alternate Bloons Rounds version is lighter, with 21 BFBs, 42 MOABs and 9 ZOMGs (none Fortified), for 391,695 RBE.
- 21 × BFB
- 42 × MOAB
- 9 × ZOMG
Frequently asked questions
What is in round 121 BTD6?
14 Fortified BFBs, 28 Fortified MOABs and 6 Fortified ZOMGs, in that order.