
"Rough and crazy anal domination in 4K Ultra HD" is what the people at Assylum promise you and that's exactly what they deliver. Its content is rough, crazy and filthy. If that's the kind of material that you're looking for, you should definitely read on.

Assylum's scenes are set in sort of fucked up facility where patients are forced to endure BDSM sessions as some sort of therapy. No two patients get the exact same treatments, so all the scenes end up being different and quite interesting.
There are 28 videos in total right now and they're all really kinky. They feature bondage, corporal punishment, rimming, piss drinking, dick sucking, butt fucking, facials and a whole lot more. The flicks are pretty lengthy and that's great, because it means that the various acts all get a decent amount of screen time.
You can stream the movies and download them as well. When it comes time to save them, you get a few download options, including one that lets you enjoy Full HD footage. As mentioned earlier, there's also a 4K Ultra HD option, but in order to enjoy it, you'll need to be willing to spring for a membership that's a little more expensive.
You can't get too carried away while downloading the videos. The reason for this is that there's a download limit in place. Another unfortunate thing about the website is that it doesn't really give you any photos. There are some vid caps that you can take a peek at, but there aren't any actual photographs.
You know how with DVDs you often have the option of watching a film with commentary? Well, this website has a similar feature. Some of its scenes come with a commentary track in which the performers share their thoughts about their work, BDSM and social issues. I wish more sites did this.
The website continues to grow, but it doesn't have the greatest update schedule. It seems that you can only expect it to post new material about two or three times a month. You don't really get any bonus material, so the site should work on updating more often.

Assylum is a little pricier than other sites and it isn't huge. However, given the high-quality of the website's videos and their uniqueness, you might just want to treat yourself to a membership.