After Jeff and Patrick's recent Quick look I found myself far more interested in this little student experiment than I had otherwise been from the buzz and nominations that were floating around. So a quick download and play-through later, I can't recommend this enough. If you enjoy these sort of lateral thinking puzzles than you'd be doing yourself a disservice not to give it a try.
It has much better pacing than I was expecting, little changes at just the right moment should hold your interest the whole way through. It will likely take you less than an hour, probably less than thirty minutes if you are a decent puzzle solver.
And just my favourite credits roll in a long time. between this and Kentucky Route Zero that's two really elegant (in totally different ways) to finish a play-through.