Want to create a wiki, but don't know how [NSFW]

Hi there! I just joined because I want to add some lost/rare media to the wiki. There is one particular media I want to add, but I don't know where to begin. It goes like this: it's a lost adult PC game called Nightstub with very little information on the net and only one screenshot. The only reason I know about it is because I used to have it a long time ago but then I lost it. From what I managed to gather from the internet, it was made in 2004 by Digital Universe Studio. I still remember the gameplay: you are a guy having to go around bars and pubs and some other publish places to attract girls to your place then have sex with them. Depending on how much the girls are satisfied with your performance, you can earn money, which you can use on gym or surgery to improve your performance. When you have sex, the game shows you a large screen of a realistic photo of real people having sex (the description is written down from my own memory, as there is no information of it on the net). I know there may be more of the game but I was playing an unpaid version (the game is a shareware)

The company used to have a website for this game but it is unavailable now, though it still appears as the first search on Google. And the thing is, there are also Nightstub 2 and 3, which I have never heard of until when I did online research. If I am to add a wiki for Nightstub, I may have to include 2 and 3, but I don't know anything about them, and they are also "lost" too.

So could anyone please tell me how I can add a wiki for this game?