A game like this should challenge you to your limits, but not frustrate you you the point of madness. This game hits it right on the nail, and the demo is one of the best i've ever seen, The demo takes the first level to introduce you to the mechanics, then uses the next level to put those skills to the test. Super Meat Boy is a great comparison, but unlike Super Meat Boy the game never made me feel like I couldn't do it without dying over one hundred times. Even the hardest rooms won't kill you more than 70 times. Both are amazing games and they both basically pioneered indigames, and those things are so damn popular these days. This game has been ported to the Nintendo Switch and has been marked down from it's original $10 to $5. The game isn't entirely long either, my first ever playthrough was only about 3 hours (without all trinkets). With 20 trinkets, 19 achievements, an outer space world, and 6 levels filled to the brim with fun challenges, the game will be quite a bit longer and is well worth the low price. Just a great game, good job!