The Saturn Track is an expert track.
On this track, the bloon pass on the Saturn's rings.
You cannot place towers in the space, you need the E.V.A. suit for that.
On this track, a 4th type of land appears: the gas. On this, you can only put flying towers and super monkeys (cause they can fly), and you need the pontoon to place normal towers on the gas.
This track is unlocked at rank 30.
Rewards : ↓
Easy : 300 MM
Medium : 500 MM
Hard : 900 MM