The ability to take a whole game, that is WHOLE and play through it without complaint or paying for extras. A solid game without paywalls blocking (or grossly extending) progression. A game designed to be a game, and not an obvious vehicle created to milk more money into a game than the game is worth....and pretty much, most mobile games are meant to be exactly that.
Of course this is my clinical definition, as I'm sure there are more articulate definitions out there too.
Oh, like Million Onion Hotel. ---
ImmortalityV, "I would like to kiss Icoyar to be honest in a non gay way though"