Rounds
Round 103
Round 103 in BTD6: 10 Fortified ZOMGs, 150 MOABs and 198 Purples in 19 seconds. RBE, cash and how to beat it.
Guide
Round 103 is a huge jump in difficulty. Ten Fortified ZOMGs spawn in the first seven seconds, then 100 MOABs and 50 Fortified MOABs pour in until 15 seconds, with three bursts of Purples on top.
At about 12,400 health each, the ten Fortified ZOMGs are the real threat, and they each release four Fortified BFBs. At 507,908 RBE it is one of the biggest rounds of the first 110. It pays about $5,967 from pops plus a $203 bonus.
Bloons in round 103
- 10 × ZOMG (Fortified) (0–7 s)
- 100 × MOAB (5–15 s)
- 198 × Purple Bloon (6–19 s)
- 50 × MOAB (Fortified) (6.5–15 s)
How to beat round 103
This is the round where many freeplay runs end.
- Raw single-target damage is the priority: several Elite Snipers, Sun Temple or True Sun God, The Anti-Bloon, MOAB Eliminator and Ray of Doom. Late-game Paragons make the biggest difference here.
- The MOAB stream needs area damage such as MOAB SHREDR, Rocket Storm or Inferno Ring.
- Remember the Purples ignore plasma and fire, so keep some sharp or normal pierce, or an MIB village, near the front.
Alternate Bloons Rounds
The Alternate Bloons Rounds version swaps the Purples for 18 Fortified DDTs, for 538,256 RBE.
- 10 × ZOMG (Fortified)
- 100 × MOAB
- 18 × DDT (Fortified)
- 50 × MOAB (Fortified)
Frequently asked questions
What is in round 103 BTD6?
10 Fortified ZOMGs, 100 MOABs, 50 Fortified MOABs and 198 Purples.
Why is round 103 so hard?
Ten Fortified ZOMGs with over 11,000 health each arrive in the first seven seconds, backed by 150 MOABs.

