Disclaimer: This is just an idea, and not a feature in the next PICO-8 Update.

I was thinking about playing a multiplayer game, when I realized I didn't have any friends to play with (sad). So I've decided to ask @zep to add an online mode for the PICO-8 Application. My idea is to make a nickname editor and match maker so that people can play PICO-8 games together. This could also be good for play testing games you want to release.

you do know that zep has been wanting to add a hiscore system (I assume) similar to cartdata?
And you also have to factor in the server hosting etc...