Eversion is a platform game entered in TIGsource's Commonplace Book Competition. The story behind the platformer in the game simply states that the princess was kidnapped, and that you need to save her.
In order to progress through the levels, the characters have to 'evert' the landscape to change its properties. As the game progresses, each eversed world grows darker and darker.
This version of Eversion is the classic without any extras. If you want to play the plain old Eversion, this is the one for you. Can be found on[Website] as a download.
This version of the game costs $5 USD, but includes improved graphics, automatic updates, achievements, a secret ending along with the others, time attack mode, and a letter scattered around all 8 levels. It can be found on the [Steam Page].