Interesting mechanic. I love playing around and do random stuff with pulling and pushing and jump. Movement is satisfying. Although i didn't reach to the upper layer of level/map. Maybe I'm stupid that I couldn't figure out the way to do it, Lol. Overall great work.
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You can reach the top by pulling down the little block in the top right (after the very very big block part).
There is also an upgrade that lets you hold two charges in the first room.
The top of the map holds another upgrade and an "infinity" thing so you can just play around after without losing any charges :)