@bennomatic looks like there's some pretty strict rules over on this subreddit - but at least it's a place to try.
https://www.reddit.com/r/iosgaming/comments/1p9ej1i/reminder_developer_selfpromo_content_is_only/

There's also these hashtags:
#iosgaming #iosgaminghub

Apple Rumoured To Be Working On New Gaming Hub For iOS #apple #apps #iosgaminghub #mobile #rumoursleaks

https://www.lowyat.net/2024/336048/apple-rumoured-to-be-working-on-new-gaming-hub-for-ios/