Fun but not perfect
I give kudos for good graphics and having a theme I don't often see here (ie BDSM) so yeah, it was fun in that respect.
However the actual concept is far fetched. Most BDSM clubs do not allow sex like that. Plus, where he went seemed more like a dungeon rather than a club...and dungeons certainly don't allow sex. (Not saying it doesn't happen but it's not the norm in clubs and for dungeons they could get shut down for prostitution)
But other than that, it was good. The only part that seemed realistic in a BDSM sense was when you spanked her breasts and nipples though. Spanking someone's arms and legs isn't all that erotic in my eyes. Neither is using jumper shocks on them. A violet wand, yes.
The milking machine bit was cool. It's not my fetish but it was amusing none the less. The fuck machine was also amusing. But of course the grand finale was the icing on the cake. (all pun intended) The graphics used for the sex scenes were pretty nifty.
Dialog was cheesy and the moaning got repetitive. C'mon! Get some VAs to do the moaning, I'm sure there are gals out there who will do it. *hinthint*