I found this pasta. Enjoy.
If my girlfriend was drawing lewd shit I'd already be on it.
if I had a girlfriend that is
Now here is how I would do it.
You need to find the right communities first.
This involves especially (but isn't limited to)
>g.e-hentai
>/d/
>hentai foundry
>deviant art
>certain groups on tumblr
>certain sub-reddits
And most most importantly
>small websites on niche fetishes
See small websites not as dead ends. Small websites normally have a relatively loyal user base that also post on other sites.
"Conquer" these communities. You don't even need to be good at what you are doing, just better than a small bunch of people (most of which are consumers, not creators).
Post on ALL of these.
Get a list. and run through it.
However: Have ONE homebase. For example how modeseven or mike inel do it with tumblr and deviantart.
And here is a little tip:
Don't do original stuff. This is actually really important. You will get WAAAAAY more followers by drawing Adventure Time or Stevens Universe R34 instead of your OC. And the best part is: Lots of these shows are relatively low effort and have huge followings.
So take a big bite out of that autist cake.
So after a couple of months, if your quality and content is consistent you should have quite a bit of attention.
Now it's time for the big hit. You can already set up that patreon but don't expect to cash in immediately.
And in this case this is just your game. Which is already quite a thing cause it's interactive and everything. Throw out a relatively feature complete demo and wherever you post now, don't forget to point at your patreon. Have a youtube channel even. Make use of clickbait thumbnails. Take advantage of every dirty trick in the book (but always deliver on tits or your ratings will go down).
After that just continue producing and wait.
Belive me user: I've seen this so many times. This normally works out. Breeding Quest was a pretty great example for this. Yandere simulator too.