Rounds
Round 17
Round 17 in BTD6: 12 Regrow Yellow Bloons, 48 RBE. The first regrow round, with cash and how to stop yellows from healing.
Guide
Round 17 is short and sharp: 12 Regrow Yellow Bloons released in just five seconds. It is the first round with the Regrow property, which lets a damaged bloon grow back one layer at a time if it is not popped quickly. The RBE is only 48, so the round is easy as long as your towers finish each yellow in one pass.
Bloons in round 17
- 12 × Regrow Yellow Bloon (0.0s–5.0s)
Total: 12 bloons worth 48 RBE. Popping everything pays $48, plus the $117 end-of-round bonus.
How to beat round 17
Regrow bloons punish defences that only chip at them. A yellow popped down to green and then left alone will slowly heal back to yellow.
- Concentrate damage. Two towers close together are better than two towers at opposite ends of the map for this round.
- Fast towers with First targeting finish yellows before they can regrow.
- The yellows come in a tight five-second burst, so a bit of pierce or splash helps.
This round is also very short, so it is a good one to send early with the fast-forward button once your defence is solid.
Alternate Bloons Rounds
ABR round 17 sends 12 Pink Bloons instead. They have no regrow, but pinks are the fastest basic bloons, so the burst can get through towers that are slow to turn and fire.
- 12 × Pink Bloon (0.0s–5.0s)
ABR total: 12 bloons, 60 RBE.
Frequently asked questions
When do regrow bloons first appear in BTD6?
Round 17 is the first round with Regrow Bloons: 12 Regrow Yellow Bloons.
What is in round 17 BTD6?
Only 12 Regrow Yellow Bloons, 48 RBE.