No one dares to mess with Nintendo. The Japanese company is notorious for laying down the law on any fan-made game or ROM that it believes is infringing on its copyright on any of its IPs. It doesn't matter if it's a newer game or something that Nintendo released decades ago, Nintendo won't hesitate to exercise its hold over its IPs.
However, in a surprising turn of events, fans are now rooting for Nintendo after it recently took down a Mario-based multiplayer platformer.
Fans cheer on as Nintendo takes down NFT game

One of the reasons why fans were so supportive of Nintendo's recent takedown is that the project concerned is an NFT-powered video game. The fan-made multiplayer title lets players earn NFTs, otherwise known as those jpegs that people sell online for a profit. The way that players made NFTs is by betting on matches and taking the winnings.

