Great questions, thanks for taking the time!
A bit of context : I've been a webmaster for many years and I'm not doing this alone - I have a team of moderators around me who help keep things running smoothly.
To answer your points :
On quality guidelines : there's no strict scoring system : the goal of Discovergg is discovery.
As long as a game is free, browser-based, and not malicious, it has a very good chance of being accepted.
In practice, around 90% of submissions get approved (according to my experience) (except spamming and nsfw game) . The review is mainly a safety check, not a quality gate.
On scaling : the moderation workload is shared, and since the bar for acceptance is intentionally low, reviews are quick. If submissions grow significantly, we'll adapt accordingly.
The community also plays a big role - users can comment and share their opinions, so the real curation happens organically through player feedback rather than top-down gatekeeping.
Hope that clears things up.
Have a good day.
Laurent.