Battle Spin!
The Battle Spinner is a feature added to BTD Battles in the 3.10 update. This spinner has prizes including medallions, a free ticket to a club battle, free entry into the highest tier arena and a free banana farmer (worth 
100). Once spun, you must wait 8 hours before spinning again. There is currently no way to skip the waiting period with an in-app purchase. However, watching an ad will hurry the timer by an hour (Mobile only; Steam versions do not support third-party ads).
Gallery[]
Getting Monkey Farmer as reward
Getting Free Rainbow Ruins Entry as reward
Battle Spinner in version 6.2.3, Club Access purchased
Getting Robo-Farmer as reward
Trivia[]
- Getting Unlimited Club Access will turn the "1x Club Entry" sector into a "
50 x2" sector. - After getting a ticket for all the arenas available, the free arena entry will turn into a 100 sector.