

… of fucking course there’s a marketshare, for the sales of games on the PC market. Most sales are through Steam. Be serious.
The only games that don’t live or die by being on Steam are wildly exceptional cases that would have succeeded even if you still had to drive to a store to get them.

At least two of those are preliminary Doom ports to the NES. There’s a third one that’s only on Github.
It’s almost like the chatbot that codes has made arbitrarily complex goals massively easier. Will that produce many low-effort or half-finished projects? Sure… but so did Unity. Ninety percent of everything is crap. You have to focus on the exceptions, or you’ll drown in it.