Board Thread:Questions and Answers/@comment-7548811-20130328141025/@comment-3153244-20130328224206

Hi,

As BTD5 rounds progress, less cash is given the higher the round. As seen on the Money page, cash yield is: Furthermore, "boss" bloons such as Ceramics (whose first layer takes 10 hits to pop, rewards $1 for that popped layer) and MOABs (whose first layer takes 200 hits to pop, rewards $1 for popping that layer) reward a lot less money than is reflected in their RBE.
 * 100% in rounds 1-51
 * 50% in rounds 52-61
 * 20% in rounds 62-85

As for the extreme tracks, are you sure it isn't 2nd time completion? If it isn't, then you can report the bug at either of the following two links:
 * http://archive.ninjakiwi.com/Forum/showthread.php/3615-BTD5-Bug-Report-Thread-(Post-all-Bugs-here)
 * https://docs.google.com/a/ninjakiwi.com/spreadsheet/viewform?formkey=dFBveXZiZEFtSndGS1pQV3RxOURQa1E6MQ#gid=0