Spore Wiki
The Spore Wiki is a wiki dedicated to Spore which has an active Spore fanfiction and roleplay community, which our own founder, Hydromancerx, helped build the foundation of. Sagan 4 actually used to be part of it, so we have some shared history! Similar to Sagan 4, the Spore Wiki Fiction Universe is also a collaborative worldbuilding project, but with more focus on space stage and roleplay. If that interests you or if you want to read more, follow the links below:
Wiki: https://spore.fandom.com/wiki/SporeWiki
Discord: https://discord.gg/mAKyXYfhyB
Be An Alien: Renewal
Be An Alien: Renewal is a well-made Roblox game in which, as the name implies, you get to roleplay as an alien creature. Much like Sagan 4, it has a focus on creativity, but instead of making the aliens yourself, you get to build lore for the pre-made alien species through roleplay! Much like Sagan 4, there's also a part of the BAA:R community that is dedicated to elaborating on the worldbuilding, and you're even allowed to make suggestions for additions to the game itself. Fun fact: Though BAA:R is owned by CaZsm, it was originally inspired by an even older Roblox game made by our own Giant Blue Anteater!
Game link: https://www.roblox.com/games/463915360/Be-an-Alien-Renewal
Discord: http://discord.gg/MCRnDYt
Speculative Evolution forum
The Speculative Evolution forum is an old affiliate of ours which also hosted the Sagan 4 community from 2017-2020, and Sagan 4 Beta for a little longer after that. As its name suggests, the SE forum is focused on speculative evolution as a whole and is a gathering place for many different people working on their own projects to get feedback and discuss evolutionary principals. Some of you with your own personal projects might want to check it out!
Forum: https://specevo.jcink.net/
Discord: https://discord.gg/Wp37rqaU9k