i've been part of the beta test for this game for the past few weeks, and it's brilliantly well made. I've been a fan of the game since its original flash version back in 04, and this iteration blows it out of the water. Hands down the smoothest and most satisfying platformer I've ever played, and I'd like to think that I'm not using hyperbole there
Consider buying it, as it's well worth your money: http://steamcommunity.com/app/230270