Back in the day, when someone said they had a portable video game, this is the kind of thing they were referring to:
I can recall my friends and I wasting hours frantically thumbing the buttons of this Electronic Quarterback, squinting to watch red LED lights move across a miniscule screen in an extremely rough facsimile of Football. It was simple, but still entertaining enough for our boyish imaginations.
Sure, all your newfangled X-boxes and iphone apps may be exponentially more powerful, complex, better looking, and more interesting, but are they really any more fun to play??
(In a word – yes.)