This is actually pretty fun! Great concept (I kinda had a similar idea going into the GameJam, so very happy to see someone else doing it!). It's so simple, but then a bit frustratingly hard (which makes for a very addicting game). Concept is 10/10, but you need to clean up some of the sounds and graphics a tad (the dark sky gets way too dark as you head up in elevation to the point where you almost can't see the platforms blocking the rocket). Well done, top marks!