I like a lot about this game. Everytying visual about is great! I love the attention to detail in sound design and sprites, i see the potential!
I just felt like this game would've beniefeted from some kind of objective or a goal. Maybe I misunderstood something, but i think for a game jam game this could use even a simple "goal block".
Either way, it was fun to jump around and mess about with oddly unpredictable blocks.
Nice work.