If I think about the games I've bought, personally I'm only interested about a small subsection of games and game features. If you can get my attention and showcase somehow that your game has those features then I'm ready to search for it in google (or itch or whatever) and read more about it. That could possibly lead to sale, but the game (and the marketing) has to "speak my language" and be convincing with that.
So the way I see it, not only the product has to be interesting specifically to me, you need to really push those key features with your marketing AND you need to get exposure somewhere, preferably somewhere relevant to your potential customers.