1. Rather than showing fake screenshot (e.g. sdl-sopwith) because GitHub repo doesn't have it, you should show nothing.
2. Some game showed tailored screenshot that doesn't look like that game at all, exactly like Google play store. Showing representative screenshot is the most valuable thing you can do, you shouldn't even allow them to choose screenshot, it should be moderator choosing screenshot, not author of game, otherwise it will end up just like Google play store where images are basically useless.
3. Some projects are "engine only" and should be flagged as such.
2. Some game showed tailored screenshot that doesn't look like that game at all, exactly like Google play store. Showing representative screenshot is the most valuable thing you can do, you shouldn't even allow them to choose screenshot, it should be moderator choosing screenshot, not author of game, otherwise it will end up just like Google play store where images are basically useless.
3. Some projects are "engine only" and should be flagged as such.