Pluto

Pluto is one of the final worlds you'll be able to unlock in Platypus Evolution. To unlock Pluto, you'll be able to buy it in the mars shop for 10 diamonds. The platypus here are much like the ones in the original world. Like Mars, you can only buy eggs to unlock new platypuses. However, Pluto is unique. If you leave your platypusses on Pluto for too long, they'll turn to ice. Clicking on the ice 4-5 times will reward you with sapphires, (Pluto's currency) and will break the platypus free. This happens even if you are tractor farming. All the platypus here are in a square shape, meaning none of them have round sides. Upon accessing Pluto, you will be given access to selling the best platypus in Mars to the Martian, rewarding you with 30 diamonds if you choose to do so.