Concentration Mode is another game mode that can be purchased for 2390 MM. When activated, it allows all your towers to concentrate: If a bloon is not in the range of said tower for at least 1 second, you can set by how much time that tower will concentrate, gaining 1 Concentration Point (CP) every 0.6 seconds (0.4 if the tower is Tier 4 and 0.3 if it is Tier 5). CP can be then used to temporarily its increase fire rate, range, maximum HP, AD, etc. Note that each tower has limited CP. If a bloon gets into the tower's range while it is concentrating, it will deconcentrate (but start attacking), losing 1 CP every 0.7 seconds until it runs out of CP. A list of the CP is as follows (INCOMPLETE):