Fun concept, but had some trouble playing through the second level. Maybe I missed something?
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Nice to hear you liked the concept! On the second level you should be able to link the spikes and box on the lower level by pressing J, which will switch their properties and open a way forward. We were originally planning to add a more thorough tutorial for that area but ran out of time, so it requires a bit of a jump in logic as is. Thanks for playing!