(Data average from Sun and Moon, X and Y, Omega Ruby and Alpha Sapphire, Black and White and Red and Blue)
The games within the Pokémon series are the only ones on this list that aren’t indie and sandbox. What makes them have the addiction factor, however, is the ability you have as the player to explore. You can rush through the story, sure, but that’s not where the fun of Pokémon comes from. Finding the perfect team of pocket monsters and training them to their best is what makes all other games in your digital libraries slowly fade away.
Plus, gotta catch ‘em all right?