itch.io

I did not mean to release it on Steam. I meant you need to market it elsewhere. Marketing as in promotion. Existing on Itch is not enough. You will not get promotion and there are not enough people seeking multiplayer games here.

So to answer your topic question: you market it like any other game. Like being visible and talking at places where people go looking for these type of games and you are allowed to adverstise/promote your game. Read some other threads about the topic. It pops up every other week or so.