That's just Dwarf Fortress.

What if we already lived in such a world? Generated for no particular reason just for "hey look I can generate worlds randomly". I guess you should enjoy your life until the tab is being closed!

That's basically Bostrom's simulation hypothesis.

Yes, amended with the idea that with sufficiently powerful computers, simulation of worlds might be doable within things that people consider as banal as website visits.

Maybe someone is looking right at us now and is about to press the refresh button.

Hopefully they’ll get sued by Choose Your Own Adventure just in time for an injunction to prevent them from pressing refresh.

thisthisstartupdoesnotexist.comdoesnotexist.com

followed soon after by a version of the Paperclip Maximizer that converts all matter into digital memory substrate to handle the constant buffer overflow of “thisthisthisthis...”

That IS the end game of VR, in some capacity.