Spec Ops: The Line is not a pretty, nor particularly fun game, but by golly is it good.
That's probably a good indicator of deep media. Not whether something is entertaining, or was created for entertainment, but whether it can be considered good regardless of entertainment value (ignoring technical value, which is generally only useful to a small subgroup of consumers).
That's probably a good indicator of deep media. Not whether something is entertaining, or was created for entertainment, but whether it can be considered good regardless of entertainment value (ignoring technical value, which is generally only useful to a small subgroup of consumers).