Joining games in progress

[Twicetwins]

I didn't see his mentioned. When I hit the Join button, sometimes at first no games show up,or just a couple. I hit it again and a bunch show up, well in progress. Why don't all games I'm searching for show up the first time? For instance, I'll search Haunted Symphony. No games show up in the scrolling list box. I hit it again any perhaps one or two will show up, maybe a third of the way completed. Hit it again, no games. Hit it again, 6 games, some almost done, some halfway done. Why not all the
games in progess?

[Airity]

It varies depending upon the number of open games. Some games may fill up, while some new games may be created.

[Twicetwins]

No, I'm pretty sure that's not it.