Minecraft with Lightning Intergration. (via LNBits)

Consider checking out https://sovereigncraft.com/ which runs as https://sovereignnode.io/

Here's a lil excerpt:

About Sovereign Craft Sovereign Craft is more than a server—it's an educational platform where the in-game currency is as real as it gets. Our unique system integrates Bitcoin, teaching players about digital currency through play.

Sovereign Craft is a Minecraft server that allows a player to learn, use and play in a world that uses real digital money in game. Sovereign Craft is the only server that uses real in game wallets that work in the real world as well. Sovereign Craft teaches players how to interact with and use the best money ever created, Bitcoin.