I know we had a few members play on this Unofficial Atlas server over the past few years, They just wipe there server a few weeks ago to add a new map.
I have played on a few unofficial servers and I found InfinitiSquadron has a really good selection of Mods and Mod creatures and Vanilla creatures.
They offer a PVE server
InfinitiSquadron.com | 7x7 | PvE | Custom Mods (topgameservers.net)
InfinitiSquadron.com | PvP | 20x | Custom Mods (topgameservers.net)
They have rewards points for playing on their servers and voting rewards also Starter Kit with a Bear and tools.
When I need a change of pace and want to hit the open seas or get that ich to build something or want to find cool animals to tame and breed, I will play Atlas
If you own the game already then pop over to InfinitiSquadron PVE server and say Hi and give an unofficial server a try, some friendly players here.
I find the Official server is overrun with pillar spam and just to laggy.
We do NOT have an official OTG chapter on this server just a few OTG members that have played together in other games over the years.