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I was planning to add a ~1-2 time limit to each level while also having the cube melt, but I lost track of time and didn't get the chance to do either. (I was in the bathroom and randomly checked the jam page and saw that I only had 30 mins left when I thought I had a couple more hours.)
Also just to clarify, this is my first 3-DAY jam, and not my first jam in general. (albeit my last jam was like 3 years ago so yeah)