Runes, which is different. Link below I think you'll like, if you havent seen already.

Runes reduces the namespace by 1 character every 4 months, so it's fun gamification. In 4 years the good names will be available.

Spaces has auctions, which is also gamification.

https://public.bnbstatic.com/static/files/research/the-future-of-bitcoin-2-tokens.pdf