the game games are made in different technology, and game from 10 years ago (with exact same tags and content) is not the same with game released this year. As for the status, some games are work in progress, some are completed and some may be demo. Such diversity may add another set of complexity layer.
The current tease with popularity and sales is working because it's causing viral effect and marketing serves it's purpose.
The idea you have is interesting, but with the potential walls and complexity, it may not worth enough or be hard to execute and monetize. I bet you heard about youtube/netflix/amazon recommendation system, that it is bad. On the other hand, however, tiktok rocks but it's algos is based on millions on data and it's content can be consumed within seconds/minutes and it's unlike games.
Regardless, good luck and keep us posted!