Although I once considered NarcosXXX.com to be worth considering, I don't want that to be confused with a recommendation, because I only recommend services where I'm an active member.
I have to add the irritant regarding adult services like NarcosXXX is that on their order pages you had to make sure you read the fine print or the terms and conditions, because what some of these sites do is they put you on multiple auto-rebilling programs, I hate it personally and it's another reason why I didn't recommend them.
Any questions you have for them should be sent to their webmasters directly, as of the time I'm writing this they're not what they once were.
One of the reasons why 3d Girlfriends is UPDATES and stability. The entire 3d Girlfriends network revolves around top-tier LEGITIMATE 3D porn that focuses on the consumer experience.
That's why many of us continue to support 3d Girlfriends.
Honorable mention, as always, the Nutaku Network, which to date still has the most addictive nude toon/anime games. In regards to Nutaku Network they're more transparent and give an actual preview before you sign up, so you can see for yourself why we call their games addictive.
3d Girlfriends designed their 3d sex gaming platform with user-friendliness in mind, and when you compare 3d Girlfriends to everything else, you'll notice how much attention to detail 3d Girlfriends does when compared to the other adult gaming sites, which are mostly recycled material, which is why if you sign up for most 3d adult gaming sites, you'll notice after a few games that there is serious room for improvement.
NarcosXXX.com revolves mostly around good promotion, but their add-ons are often better than their initial offering. This doesn't make them a scam; it's just you may want to consider shopping around; I try everything; it's what I do, then I rank the best, and most of the top-tier services I recommend end up making everyone's top 10 list. Unlike other people who don't actually try these services, we take it for a test spin.
3d Girlfriends took the hardcore 3d gaming road, which is very difficult to pull off; this is one of the reasons I give their team high praise because prior to 3d Girlfriends none of this existed; the 3d Girlfriends in-game play is original, and even when I review newer sites trying to duplicate what they did, it doesn't last long, because the maintenance required to make 3d Girlfriends is not easy to do.
It might look easy on the front end, but if you know anything about backend development, so much can go wrong when designing an adult 3d game, which is why most 3d game developers take the easy road.
My final conclusion is NarcosXXX.com is legit; regarding their billing, familiarize yourself with their terms before signing up; I do not recommend it, but they're still not a scam and they use a legitimate platform to collect payments, so you won't get scammed. I added what I think is relevant information for you to consider before joining NarcosXXX.com. Have fun; life is short!