RuneScape:

OSbot.org 2013 this one's supposedly in a database pack should be posted individually
Sythe.org 2012 or 2011 this was the second most popular RuneScape forum and it was public ages ago.
Forums.soulsplit.com 2012 this was another popular RuneScape marketplace or trading forum if memory serves me right.
Tribot

Toontown (I remember a few of these were on RF before it's closure ):

Toontown Fellowship 2014 a popular private server ran mostly by adults from the irc hacking era a development server of enjgmeows was breached which had a copy of the prod server
Toontown Infinite 2014 the second biggest private server 
Toontown Next 2014
Toontown House 2014
Toonbook 2014 a Toontown community
Version of Facebook 
Toonter 2014 a Toontown community version of twitter

Habbo Hotel:

Habbo.st another old forum or habbo hotel private server that was also one of my very first databases. 
GThotel this was a retro private server that got hacked

Roblox:
V3rmillion 2013 the infamous Roblox forum has been dumped in the past and it's extremely elusive.
Rbxflip 2020 the infamous gambling site that used to be advertised on the ad spots on top of both hackforums cracked rf and a few other popular forums. Allegedly only has Roblox auth cookies and no other PII was stored. Not much else is known about this database.

Toontown Infinite is posted on this forum -
https://breached.to/Thread-Toontown-Infinite-Database-Leaked-Download-January-2015

Toonter: https://breached.to/Thread-Toonter-2014
Toontown Infinite: https://breached.to/Thread-Toontown-Infinite-Database-Leaked-Download-January-2015?highlight=Toontown
ToonBook: https://breached.to/Thread-ToonBook-Nov-2015

soulsplit: https://breached.to/Thread-soulsplit-2014-Partial
habbo.st: https://breached.to/Thread-Habbo-st
sythe.org: https://breached.to/Thread-sythe-2014

(August 2, 2022, 01:13 AM)surface Wrote: Toontown Infinite is posted on this forum -
https://breached.to/Thread-Toontown-Infinite-Database-Leaked-Download-January-2015

Oh your right didn't notice that haha

does rbxflip db exist?

(August 1, 2022, 10:55 PM)MysteriousHacka Wrote: V3rmillion 2013 the infamous Roblox forum has been dumped in the past and it's extremely elusive.

https://breached.to/Thread-V3rmillion-Users-2014-8K

(August 1, 2022, 10:55 PM)MysteriousHacka Wrote: OSbot.org 2013 this one's supposedly in a database pack should be posted individually

https://breached.to/Thread-OSbot-org-2013