Round 135 is a freeplay round in BTD6. It consists of 7 stacks of 2 Fortified ZOMGs each and 7 stacks of 3 Fortified DDTs each, all of them quite spaced. This is considerably more difficult version of Round 118. Not only DDTs are fortified, but this time ZOMGs are fortified too.
Similar to Round 129, bloons spawn on this round comes in seven groups.
This round is rather dangerous as it features strong Fortified ZOMGs and fast Fortified DDTs at the same time. Be aware that the Fortified ZOMGs come in stacks of 2 and the Fortified DDTs in stacks of 3, meaning that you will also need effective grouped-MOAB Class popping. Plus, this round is the important round for testing suitable popping power against Round 140 Fortified BAD's children.
To beat this round effectively, you should target Fortified DDTs first, and then you need to destroy Fortified ZOMGs in right order.
Barely surviving this round means the player will also struggle against Round 138, which has way more DDTs and Fortified DDTs.
Additionally, Round 135 features the 2nd highest RBE of all rounds up to 140 (Only Round 131 has a higher one).
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