For now, you can only continue to complain about how inconvenient it is to import models into the game and brag about how "I can do everything myself in three hours"))
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For me, this is just preparation for more complex things that are planned for the future.
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P.S. Perhaps it would have been worth considering creating 800 creatures as a more serious task. Will you learn the pattern of behavior? 800 creatures in a month, a character model in 3 hours – it's all from the same series.
Is there any suspicion that if you couldn't handle this, simple in your opinion, task, then you will definitely not be able to handle the "more complex" ones that you "plan for the future"?
Maybe it still makes sense to start with something simpler? With something that is actually possible to do.