That my games don't need an app like "flash" or "unity", etc. to get started or if it's about how it gets coded: just in a textfile which could be renamed to "html"-ending and it includes the whole game. So that's also the reason why I don't put its download-link available on itch.
And that my games will includes no audio/sound or graphics, so it's easier fr progressing, taking less space when loading and even if its about existing graphics/logos or sound-parts, if none are included they couldn't be about copyright either.