I'm coding all this by myself without getting any sort of money back. No problem, that was the plan all along! But I can't use any IP-protected arts (neither placeholder art, really), and since sadly I can't draw (no art skills whatsoever), I need to pay for someone else to do that for me.
There is also the website server cost and some publicity that needs to be done, although those are minor costs compared to art right now.
All that said, Can you help? Any amount is huge for us, and you also get rewards/achievements!