I wouldn’t limit yourself to game dev and you might consider looking for a software product tech support role to get your “foot in the door”.
Obviously if your heart is set on game dev then ignore me. But getting some experience in software dev in general will help you be able to pivot to other roles or sectors.
I was going to recommend looking at https://www.elastic.co/guide/en/elasticsearch/reference/current/paginate-search-results.html#scroll-search-results - but it looks like that method is now not advised- but if you read up above it it looks like there’s a search_after/PIT method described which sounds similar to the article.
This is all to say - I don’t think this is a one-off concept - it’s been around for a bit.