Story:A freeware puzzle-platformer about a robot who has lost his memory. Using the propeller on his head and time travel platforms, he seeks to learn where he is, and his purpose. Explores the time travel mechanic quite well and features extra time trials and challenges. Released in 2008, created by Oren Bartal.
I remember this one, very simple mechanics, but puzzle difficulty ramps up nicely, I certainly couldn't beat it, is still very fun and a good exercise in logic.