managed to solve it in some way! at some point i thought this was going to be impossible.
the pixels that change in the creature correspond to the internal state of a 3-bit counter built with NOT and OR logic gates.
the idea being that one will be able to solve the counter by hand and simultaneously make their "pet" advance in time.
this was a nice collaboration between nasu and a small program i made to keep track of the pixels and their states.
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