Sprites were based on Fire Emblem characters. If they ended up looking too similar to the original ones, I apologize, In order to play safer I've uploaded a new version that no longer uses those sprites and disabled the ability to offer donations. I'll be working on fresh art, thank you for your helpful comments.
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As a means of expressing my thanks for this change, I'll be sure to play it again towards the end of the jam so I can give you proper feedback. I'm just glad it wasn't an issue of trying to hide it. I would say you should continue to take donations, just be mindful of using artwork from companies like Nintendo. They're very litigious.