I think Signal should do something similar to this, just at a smaller scale. I've messed around making a game using this concept... An infinite 2D open world wh

I think Signal should do something similar to this, just at a smaller scale. I've messed around making a game using this concept... An infinite 2D open world where people's chat messages appear over their heads. If they're speaking using the encrypted chat and they haven't shared their private key with you, it's gibberish. All messages and player locations are sent to all players, and you can zoom visibility in and out so you can't correlate location to find out who's talking to whom since everyone can theoretically see the whole map.