Bloons Tower Defense 9 (hitthepin's version)

Bloons Tower Defense 9 is the next game in the Bloons Tower Defense series. Many of the aspects and all of the towers return from Bloons Tower Defense 8. The game stays as true to the original series as possible, with Heroes, Monkey Knowledge, and game modes retained. The game has 1440p graphics, and runs at 100 fps.

Oh, boy. Did you think I was just going to stop with an eighth installment? Nope. The is never the end is never the end is never the end is never...

Towers
Each Monkey has four paths and eight(!) tiers. The first two upgrades on all paths are always accessible (i.e., a 2/2/2/2 Dart Monkey). However, one is still only able to get third tiers and higher on one path for each Monkey. Only one of each kind of 8th tier can exist at any time.