One thing I think is super cool about Second Life is that it allows you the freedom to explore some of your darker inclinations from the safety of your favorite pair of flannel pajamas. I have a long history of playing demon characters. I don't know where it came from, its just a thing really. Recently I found a new demon themed sim on Second Life called Pandemonium.
It has a great design to it, frankly, it is pretty amazing. to look at, all be it a little constricted from what I've seen. What's even better is that it is seemingly constantly full of RPers. One demoness who I saw, I specifically messaged to tell her how much I loved her avi and she just ignored me, I'm not sure if that was RP or just basic rudeness. If you go, don't expect a lot of general chit chat, or breaking into OOC, because it won't happen. It all adds to the atmosphere of the place in the end, but if it isn't something you're used to then it will annoy you. Cliques don't just happen in the RL folks.
Also, I should warn you that this place is an adult sim, meaning it has sexual content in the vein of BDSM, heavy on the BDSM. If you pop in and end up getting branded, it isn't because I didn't warn you.
When you arrive at the sim, you walk through a welcome area where you decide if you are a demon or a human, that decision will determine where you end up when you enter the hell-pit. The hell pit, by the way, is a literal pit that has rows of dragon skulls which double as cuddle and "recreational" areas. Nearer to the center are a few strip poles, some more seating and various torture devices. There seemed to be a few lounging areas hidden around, but most of the action is in the pit. My plan was to take a few pictures, but even if I derender everyone I'm still going to feel like I am being invasive. For now, you just get pictures of me and if I end up lucking out and finding a time no one is around, I'll add them to this post or my Flickr.