Unity Native Client Player | Raxen's Run

Made with Unity, © 2011, Unity Technologies.
Scripting powered by the Mono Project, ©2011, Xamarin. The Mono runtime is licensed under the terms of the GNU Library General Public License, version 2.

There's also a version on Kongregate with global highscores (Win/OSX):
http://www.kongregate.com/games/pansapiens/raxens-run