Rewinder

Rewinder is a first-person runner game with a time travel mechanic.
The objective of the game is to escape from an abstract prison by travelling through different worlds connected by portals. To open them, the player must collect collectables set in acrobatic levels.
In the long run, the player will aim for the highest score on each level, and for the overall time spent playing. The less time he spends to finish a level, the better his score will be.