[brettdeveffect]

This is similar to an idea we have been playing with:

https://www.betabytes.io/blog/introducing-the-metaverse

For instance, here is a video of a shared canvas:

https://www.youtube.com/watch?v=unVzxgjJNdA

[smt88]

Your idea is interesting (if not practical) because it opens up some weird questions, like: what if Second Life were a life simulator for some people, but a FPS zombie shooter for other people? Or: what if Fortnite became a dating app, like Instagram has over time?

Your PoC at least proves that you don't actually need cooperation between developers to achieve something. You just need a compatibility layer.