In an ideal world, your smartphone and tablet would always be online (and you'd still have an unlimited data plan), but that's just not the case. Problem is, some Android games require a connection even after you've completed your download, but others do not. It's that latter list that Google's breaking out into its own section in Play, called "Offline Games." There you'll find Asphalt 8, Dots, Jetpack Joyride, Assassin's Creed Pirates and a few others -- 54 games in all. That's a shockingly slim selection, so this list is hardly all-inclusive, but if you're in the market for a game to play on your next flight or subway ride, it's a good place to start.