Saren River

"Behold, the Saren River! This mysterious river holds traces of an ancient civilization that predates all of our known ancest-"

- A Mysterious Guide on the significance of the Saren River.

"Hey, quit gushing about how this is so archaeologically important. You're in the wrong franchise, guide."

- A random monkey, who reminds the guide that this isn't Kingdom Rush.

The Saren River is an EXTREME!! track unlocked at Rank 55. It takes place on a river, obviously. However, the water isn't all useable. Why? There is an algal bloom going on in several locations. You can't place anything on water that has been taken by algae except for Tribal Turtles and any other amphibious tower or agent.