A game like this that sees decent popularity (e.g. becomes a best seller, or gets 10k concurrent players on Steam, or makes 50 million in sales)

https://old.reddit.com/r/singularity/comments/1kuh1mt/are_we_entering_the_generative_gaming_era/

resolves to the date it meets jim's subjective criteria of success (rather than e.g. the date it was first released)

playable example of a game that uses vidgen-type tech instead of a traditional engine:

https://oasis-ai.org/