The Bloons TD Battles 3.9.1 update introduced the all new sticker pack for iMessage on iOS 10! This pack will be automatically downloaded with the game and all you need to do to access them is follow these steps:

• Launch the Messages app
• Tap on the App Store icon beside the keyboard text field
• Head into Store > Manage
• Toggle the Battles button

and voila! You'll have access to an array of awesome stickers to express your passion for popping!

Have fun!