https://www.cryptovoxels.com/ might be the closest thing today, but, it relies on the ethereum blockchain and is very NFT oriented.
You can enter their virtual world without a login, in a web browser, without using any cryptocurrency, however (i did it once).
I don’t know much about it but my understanding is that the long-term game state (eg, who has what items, and what virtual real estate (unreal estate?)) is all kept on-chain, which is rather absurdly expensive, but the minute-to-minute state must be just on their centralized server. However, I think that (in theory at least) if the people operating the centralized infrastructure disappeared today that others could run gateways to the same gameworld state tomorrow. Maybe.
https://www.cryptovoxels.com/ might be the closest thing today, but, it relies on the ethereum blockchain and is very NFT oriented.
You can enter their virtual world without a login, in a web browser, without using any cryptocurrency, however (i did it once).
I don’t know much about it but my understanding is that the long-term game state (eg, who has what items, and what virtual real estate (unreal estate?)) is all kept on-chain, which is rather absurdly expensive, but the minute-to-minute state must be just on their centralized server. However, I think that (in theory at least) if the people operating the centralized infrastructure disappeared today that others could run gateways to the same gameworld state tomorrow. Maybe.
My investment advice is to not invest in this.
Sounds like a problem looking for a problem. (Good advice)