Offensive Push

Offensive Push is the 4th tier upgrade of the COBRA (Covert Ops Battles Response Agent), an exclusive tower in BTD Battles. It allows the player to send bloons  1   round   earlier  than normal. For instance, a Z.O.M.G. has to be sent out on Round 25 of BTDB. If you have the Offensive Push upgrade, you can send it on Round 24 for no income reduction. Offensive Push costs $1750.