Welcome! If you're looking for board-based or chat-based RPs, feel free to look for a thread in the OOC forum to join, and post to request a spot. Or, you could always go ahead and start one yourself.
Gaera is the main setting here, but there are plenty of others in use. Some threads are freeform and some use numbers (oftentimes using PhilSys, the homebrewed system we've got around here that you should feel free to ask for help with should it become a pain).
Message anyone you like if you've got any questions or would like to get into an RP. Best of luck, and hope to see you around!