A Psychic Odyssey Through the Minds of Misfits, Monsters, and Madmen. This classic action/adventure platformer from acclaimed developers Double Fine Productions follows the story of a young psychic named Razputin.
To access the beta version, just right click on the game in your library, go to properties, then the beta tab. Select the "beta - beta testing branch" from the dropdown and Steam should update to this version.
If this works for a good number of people without introducing bugs, I will push it into the main branch!