Here's how to make a half-assed brothel simulator that is bound to never be finished:
- design unbalanced economy management system, like having to pay incrementally ridiculous debt instalments, starting at $400.00 per 8 weeks and and ending up at $4800.00 while your prostitutes initially make around $20 per trick and can only perform 3 tricks a week. And yeah, each type of service has its own learning curve, so a lv 20 handjob will bring more money than a lv 2 assfuck, something in the region of 3-4 times as much. What is the point of training your whores/slaves in submission to unlock more advanced services? I don't know, maybe just to unlock new scenes?
- conflate BDSM with prostitution and sexual expertise, so your training regime will consist of regular spankings and other will-breaking techniques copied from roughsex porn genre until they submit and agree to offer handjobs, blowjobs, titjobs, pussy and anal for money. That's right boys, if you ever want to become pimps, make sure to have a fully equipped dungeon and whip them hard until they say 'yes, Master, I will now sell my ass to clients'.
- add a hypno-feminization side story out of the blue, because why not? As a male brothel manager, you really need to consider becoming a Madam. And yes, you switch gender simply by watching email attachments from unknown source containing strobing clips of female cocksuckers and buttsluts with subliminal messaging convincing you that sucking dick, eating cum and taking it up the ass is gooooooood. Follow up with surgical procedures and voila! You are now Jenny the Madam.
- make sure to appropriate as much real-porn clips with as many different actresses as possible to inflate your game size to almost 1GB, preferably more. And add more verbal diarrhoea to sex act descriptions to make up for the lack of story and engaging gameplay
- start developing the game at least 3 years ago and never intend to finish. Make sure to open a Discord / Patreon / Subscribe accounts, so you may build a loyal fanbase, who will reward you for your valiant efforts.