Which games have the largest and/or most active communities?

I've been playing Farm RPG for a bit over 3 years now, and I'm always looking for a "backup" game to play.

I've tried several other games, many from this sub, but none have hooked me like Farm RPG. Many are good games, but the issue is some combination of small player base and/or lack of a global chat so that I feel like I'm playing by myself.

If I go to the in-game chat and it says 2 players are logged on, or the last message is several hours old, then I'm hesitant to invest my time in that game.

I'm not a super chatty person, but just seeing the activity of a chat, or knowing that if I have any questions I can get an answer in a minute or two makes a game more engaging for me.

So, which PBBGs have largest or most active communities? For comparison's sake, Farm RPG has 250k registered users with 2200'ish logged in right now, and multiple active chat channels.

I'm guessing Melvor Idle might be one of the largest, and I did play that for about 18 months, but the lack of in-game chat was a detriment.

I'm still waiting for the full launch of Idlescape, which I know has a large community and in-game chat.

What are the other big ones? Bonus points for no PVP (thinking of Torn there).

Thanks