If your aim is only to get noticed I would recommend making your games free and also having them playable in browser. There are so many games on Itch that many people just ignore ones that require payment to play. People also generally don't want to download games, due to the general hastle and possible security concerns. Having games playable in the browser will make sure they can be played on Win/Linux PC and Mac too. Also, if your games' formats support it, try to make them playable on mobile (touch controls and 'chunkier' graphics that can be easily understood on a small display) and laptops (don't require use of a numpad or complicated interaction with a pointing device that would be hard to do with a trackpad) as well. That will help make sure you have the widest possible potential audiance.
Viewing post in Why aren't I getting noticed?
I second this! I personally tend to play browser games as first preference myself, so I suppose that's where my bias comes from. There's a lot less hassle overall and you don't need to jump through hoops to enjoy something simple. I can't speak for other players but I'd still be online and logged in after playing it and would usually remember to comment or rate. It's still fresh on my mind, after all.
Even a demo is fine - I've played demos on the browser and commented right after since I at least had enjoyed the demo version. I feel more people might consider buying or downloading a game if they could try it out on a browser first without any hassle to quickly make a decision. Sometimes I download games and forget I've downloaded them, only to discover I'd actually downloaded it weeks later, and have unfortunately already lost interest in it.
But if a web version isn't possible for a demo due to limitations, a free download would work just as fine, imo. Multiple screenshots also help if a demo isn't available. At least as a potential buyer I'd know what to expect, aha!
EDIT: THESE FORKING TYPOSSSSS