Every planet in the game has its own parameters which define the way each planets atmosphere is looking. I made them as realistic as possible with different values in maximum velocity, density, thickness, …
This makes this game a genre-mix: Sim + Arcade.
It wasn’t easy to find the right values but in the end I found them.
So the values match each planet and the planets difficulty depends on the colonisation level.
This is why there is no ranking in difficulty ingame.
Enjoy the physics in GameBoy style!