Bloons Adventure Time TD

"Developed by Ninja Kiwi and based on their Bloons Tower Defense franchise, Bloons Adventure Time TD features the Bloon hordes invading the Land of Ooo! Finn and Jake will need all the help they can get to stop them. Players can recruit their favorite Adventure Time characters including Princess Bubblegum, Marceline, Ice King and more, as well as the monkeys from the Bloons TD franchise as they travel from kingdom to kingdom to send the Bloons packing. The free-to-play game will be available this summer."

- Cartoon Network News

"Exclusive soft launch access in Australia, New Zealand, Philippines, and Singapore!

The bloons have invaded the land of Ooo and it's up to Finn, Jake and the monkeys to stop them! Bloons Adventure Time TD is an awesome corssover between the award-winning animated series Adventure Time and the #1 Tower Defense game, Bloons TD!

GET YOUR HERO ON!
 * Pop Bloons as your favorite Adventure Time characters like Finn, Jake, Princess Bubblegum, Marceline and more!
 * Recruit brand-new monkey heroes like Captain Cassie, C4 Charlie, and Sai the Shadow!

A NEW ADVENTURE!
 * Play your way through over 15 adventures and 50 maps!
 * Original story featuring the voice cast of the animated series!

MAKE THE BLOONS GO BOOM!
 * Equip your heroes with 200+ weapons and items from Adventure Time and Bloons TD history!
 * Build your defense with over 50 allies including fan favorites BMO, The COBRA, and Lumpy Space Princess!
 * Unleash over 30 awesome, Bloon-shredding powers!"

- Soft-launch App Store description

Bloons Adventure Time TD is a crossover game between Ninja Kiwi's Bloons TD series and Cartoon Network's "Adventure Time" series. It was announced on March 8th 2018 on the Cartoon Network International News website (and later on other online articles) and on March 9th 2018 in the Ninja Kiwi weekly blogs. Nothing much is known, except the game will be free to play on Mobile devices such as iOS and Android, and is expected to be released around August 2018, according to Cartoon Network's news article.

It has been first soft-released on 14th July 2018 to Australia, New Zealand, Philippines and Singapore.