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