Rounds
Round 108
Round 108 in BTD6: 9 ZOMGs then 10 Fortified ZOMGs, the first ZOMG rush after 100. RBE, cash and how to beat it.
Guide
Round 108 is the first big ZOMG rush of freeplay. Nine ZOMGs spawn over 15 seconds, then 10 Fortified ZOMGs follow between about 14 and 24 seconds.
At ×1.80 ramping, ZOMGs have about 7,200 health and Fortified ZOMGs about 14,400. That is well over 200,000 health on the outer layers alone, before counting the BFBs inside. RBE is 643,088 and the round pays about $5,796 from pops plus a $208 bonus.
Bloons in round 108
- 9 × ZOMG (0–15 s)
- 10 × ZOMG (Fortified) (14–24 s)
How to beat round 108
This round is pure single-target damage and stalling.
- Stack your strongest blimp killers: Elite Snipers, Sun Temple or True Sun God, The Anti-Bloon, MOAB Eliminator, Master Bomber and Ray of Doom, ideally boosted by a Jungle Drums and MIB village.
- Late-game Paragons such as the Apex Plasma Master, Ascended Shadow or Goliath Doomship carry rounds like this.
- Slow the ZOMGs with Maim MOAB, MOAB Glue or Super Glue, and keep area MOAB damage for the 76 BFBs they release.
Alternate Bloons Rounds
The Alternate Bloons Rounds version sends 13 ZOMGs and 12 Fortified ZOMGs, for 820,880 RBE.
- 13 × ZOMG
- 12 × ZOMG (Fortified)
Frequently asked questions
What is in round 108 BTD6?
9 ZOMGs followed by 10 Fortified ZOMGs over about 24 seconds.

