To make this list, I’ve viewed over 100 games on itchi.io, but it remains to be only my opinion.
1. Original idea:
A good game shouldm’t have deep mechanics, but it needed to be creative.
There are many simple games on itch.io, that are well-bought by players.
I mean graphics.
I don’t see any games, that look like AAA project, or try to be looking like it.
Pseudo-3D or 2D are still popular due their simplicity for developer.
There are not so many really long games, which could be interesting for couple of hours (like Dota).
Other good games to play: