The art is amazing! Though, as others said, it was a bit confusing without a guide :')
I like the idea of speedrunning crafting, maybe there could be combos (e.g. craft A -> B -> C -> repeat) to defend against hordes of enemies.
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Thanks for the compliment ^^ Main mechanic while not complex by itself is hard to figure it out the first time. More complex crafting would make the game less repetitive, as you say a combo system, maybe try a Tetris like mechanic or something that feel more reactive rather than just do the same over and over.