As an irrelevant youtuber with no legal authority whose opinion does not matter, I think you should obey the law. Make your own inspired IP. We live in a timeline spoiled for choice with incredible new IPs with inspired mechanics. It's the safest/best route for new game devs to take. But if you've decided to take the risk of making a fan game & I can't convince you otherwise: Learn from cancelled fangames of the past. Making fan games instead of original ones is bad idea, but advertising that you are doing
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