A part of videogame making is getting visibility. There is a good opportunity here to learn what the top rated games did well and what the lower rating games did wrong.
For example, besides not having browser support, some of the lower rated had issues with their exports or had exports only for one platform.
Also choosing the best screenshot you can possible take is important.
Once you beging to have clicks and ratings, then it will snowball from there as people will tend to play the ones at the top.