I will make a 2d game for you in gamemaker studio 2

Yes, I've finished two smaller games and released one to the public and I'm also working on two more games. You can check out my Itch page here: https://csaki01.itch.io/ You can also find games I worked on here: https://store.steampowered.com/search/?developer=Logical%20Extr

Yes, I currently can but it's more troublesome to test and more limited in the kinds of special effects they can handle!

Yes, but you will have to provide the networking solutions for it yourself, i.e. you'll need a web server and on that a database, if you want it to be secure an API and someone who knows what they are doing with it! Then I can send UDP or TCP messages to that server as a buffer.

If I must... but it's NOT going to be pretty!

Please don't, we're gonna be here a year later if I have to decide anything! Please prepare a design document so that I can give an estimate on how long it's going to take, how much it's going to cost and whether I can do it at all.

Nothing lewd. You can modify the game after it's done, so if you want something lewd I'll work with placeholder sprites.

Maybe, but no guarantees, there are sometimes things I can't do in an already established project that I otherwise could without doing major refeactors that would take days or even weeks of work!