This adds a button to the main menu, exposing Uber's match making as it stands. The UI code has been in the live build for a while (it's in v68767, possibly way earlier). The real work is in the server-side matching code, which obviously we can't see and can be edited transparently, but it does work (it matches players up fine). This mod is not for proper use as no one is on it (use PA Stats if you want to play auto-match games). This mod is for testing the match making code. It's probably random first-come-first-served, but it may have already been dialled to try and match skill if more than 2 people are in the queue. There is a disconnect issue, upon match one player makes the lobby and another joins, but sometimes they fail to join. Click the match making button again and you should join ok. It would be nice to test: If someone else can 'rejoin' after someone initially failed to join Whether people are matched by skill. Many people connecting simultaneously many times may be able to test this Your preferred region is sent with the request, so it may match by region. Or it may not be enabled, or just prefer your region over others On PAMM.
I only started in 58772, but the beta-release/alpha-directory UI had a matchmaking scene at that point.