Every game has a Boss Rush mode, so why not BTD?! In this new mode, you're given 10000$ cash to start, and you're given a HUGE sum of money after each round! You must fight a series of bosses here, one for each round. If you complete this mode, you'll get a Platinum medal for that track. You must get the gold medal for a track first before you can play Boss Rush on that track.
- Boss 1: M.O.A.B.
- Boss 2: B.F.B.
- Boss 3: I.G.B.M.
- Boss 4: T.U.R.B.O.
- Boss 5: Z.O.M.G.
- Boss 6: S.P.I.C.A. and A.R.I.A.
- Boss 7: S.U.P.E.R.B.
- Boss 8: B.L.I.T.Z.
- Boss 9: Apopalypse Bloon and Genesis Bloon
- Boss 10: Chaos Bloon
NOTE: The tenth round won't be unlocked until you've completed the Final Battle! If you haven't completed it yet, then this mode will end at round 9 and you'll get a Platinum medal for completing it. If you unlocked the tenth round and completed it, then your Platinum medal will be replaced with an Emerald medal! The Boss Rush mode with a 10th round can be referred to as "Boss Rush F", and is now one of the last things the player can unlock!
- You can buy this mode for 1200 MM after reaching Rank 54.
- This is pretty hard, especially after round 2.