Finale Saga

The Finale Saga is like an "expansion pack" for BTD6, akin to the Aurae Saga. It only costs 2000 MM, mostly because it requires completion of the (expensive) Aurae Saga. It can be turned on and off. It includes: Also, playing tracks below Extreme on Easy is disabled.
 * Anything incomplete from Aurae Saga
 * Bloons and Blimps only have a 5% chance of being Aurae Bloons, and they never appear during large rushes.
 * Unlock many, many special missions
 * Among those are The Alpha, The Omega, and Mu-Nu, The Balancer.
 * After completing those, you can start the first of the missions involving the T.M.A. bloons and the K.I.L.L.
 * The Hard Mode Boss is neither Patchwork nor Apopalypse; it is the H.A.L.T.
 * Tracks have a new mode; Triple Force. There are three times the bloons, but towers cost one-third of what they do on Medium.
 * Bloontonium Lab is replaced with a similar map, Dilapidated Lab. This is because of what happened with the E.N.T.I.T.Y., despite the repairs the monkeys did.