6 | Tiny Tower
Tiny Tower is the textbook definition of "time sink" -- spending a few seconds with this game can easily turn into a few minutes. As the landlord of a bustling urban skyscraper, it's your task to manage "Bitizens," shops, and job distribution as you try to earn enough money to increase the size of your tower. Part of the incentive is finding all the different types of shops in the game, and matching each Bitizen to their dream job -- by doing that, sales increase, more money rolls in, and you can build more floors in your Tiny Tower.
Be warned: Once you get past 15 floors, you could be checking your iPhone every minute to stock your Pub/Cyber Cafe/Coffee Shop/Laundromat/Night Club or move in a new Bitizen. For a free game, the features are quite robust, yet simple. Of course, if you want to speed things along, you can always buy virtual "Tower Bucks."
Why It's Better on iPad: Every shop and apartment has a bunch of little details cleverly built into the background -- so, if anything, it's cool to be able to scan your tower with the larger screen.
5 | Dead Space for iPad
One thing that Electronic Arts has done very well with the Dead Space franchise is porting the experience to systems with vastly different control schemes. On the iPhone, swiping and tapping gestures are the core gameplay element used to battle hordes of deadly Necromorphs, and they work incredibly well. Even the production values outclass many other iPhone games with 3D engines, as Dead Space retains the ominous lighting, speedy enemies, and eerie sound effects that made the original game such a frightening title.
If you're really a survivalist, you can also try the iOS version's "Nightmare" difficulty, which basically takes away your ability to recover health during levels. If you need practice, Dead Space's content also includes some neat extras like exclusive weapons and survival modes. Just make sure you have an iPhone 3GS or better to access everything the game can offer.
Why It's Better on iPad: Not only is Dead Space for iPad a better looking game, but the control scheme much friendlier to the wider screen space, which is helpful when a Necropmorph is trying to rip your face off.
4 | Cut The Rope HD
Cut the Rope has become just as much of a "Top 10" sales chart mainstay as Angry Birds, and it's no doubt due in part to its crisp, colorful graphics and charming lead character. In each level, you must figure out how to get a piece of candy from one side of the screen into the mouth of an adorable green critter named "Om Nom." Early in the game, you'll accomplish this by cutting ropes attached to the candy with a swipe of a finger, initiating a physics-powered puzzle that you'll have to use both planning and speed to solve.
Although it sounds simple enough, other elements like a gravity changer and collectible stars manage to keep things fresh, and add variety to an already fantastic puzzler.
Why It's Better on iPad: Accidental cuts and slow level scrolling is a much smaller issue on iPad, and the HD version boasts shiny, polished, vibrant visuals.