Vex 3

The 3rd instalment is just as hard-core and demanding. Vex 3 draws heavily on Super Meat Boy and its main principle is "die and retry", with difficult courses to complete where the tiniest error could be fatal. So your movements had better be 100% precise as you quickly and smoothly create sequences. The game has a "ghost" mode where you can constantly improve your runs and a level editor so that you can create your own courses.