I used nostr-login to allow nostr users to compete against each other for sats while learning about bitcoin and nostr and contributing to open source software development. There's an in-game bitcoin/nostr quiz to earn gSats (game-sats) for buying more equipment (currently adding more questions). 50% of all in-game lightning payments go to the epoch winner and the other 50% go to OpenSats. The epoch join fee is currently 21 sats, but I plan to raise it after testing/feedback to increase the size of the payout/donation. You can read more about the game logic in the Rules / FAQ section.
I would love to get your feedback / suggestions for making the game more fun and appealing!
Cheers
Chris