The reason that some games are not loading is because a couple shards have gone down (please see <a href="http://status.roll20.net/" rel="nofollow">http://status.roll20.net/</a> ).
Firebase is currently working on a fix right now:
<a href="https://status.firebase.google.com/incident/Realtime%20Database/18025" rel="nofollow">https://status.firebase.google.com/incident/Realtime%20Database/18025</a> .
Keep an eye on that URL as we're doing the same thing :) We're consolidating all discussion on this topic over here, <a href="https://app.roll20.net/forum/post/6286586/cant-load-your-game-please-check-here-first/" rel="nofollow">https://app.roll20.net/forum/post/6286586/cant-load-your-game-please-check-here-first/</a> , so I will be closing this thread. If when Firebase comes back up you are still having issues, please don't hesitate to repost your issue.