Bloons Tower Defense 5 - Daily Challenge 13 April 2013 (Separated RBE)(N...

Separated RBE - Bloons lower ranked than lead are on rank up, bloons higher ranked than lead are one rank down. Castle, rounds 20-50. Four towers max. By Jlm7

Video is on 2.5x speed
No Agent & No Premium
(Please comment if you have better strategy)
For more walkthrough: http://bloons-tower-defense-5.blogspot.com