Don't see how this relates to the theme. Couldn't get past any of the water parts, since whatever floats goes in the same direction and speed. All seems procedural, which is good.
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I tried to connect the melting mechanic to the jam's theme. But it turned out to be more narrative-based than gameplay-based. Procedural level generation needs much more tweaking, but most of the time I managed to get across small water parts. It's a shame it didn't happen for you. I will try to look into it! Thanks for the feedback!