Excellent pixel game. Quite challenging to play. Requires patience and great control over the mechanics to finish later worlds. But the gameplay is very tight and responsive. The best part about this game is probably the monetization! It's actually free to complete and very graciously rewards you with "trinkets" to help you on your journey to the top. Non-intrusive ads and only optional ads if you want more "trinkets". Great work by the developer here! A must try experience.