Don't forget the SNES emulator! You can hook up a Wii/PS3/Xbox controller to play with it (I think). I've been revisiting some old school RPGs that I used to love.
Also, I mentioned this game on an earlier post, but I know no one will really check it out without a good description.
Gem Miner 2 - It's $2 on the app store, so far I really like it. It's similarish to Terraria (if you're familiar with that game), you play a miner and you can dig underground, make tunnels, and find ore to sell and upgrade your gear. Each mission has a different set of goals for you to complete (obtain X amount of gems, save people, save X amount of money, find way out). Sounds pretty basic but try the Gem Miner free edition, and if you like that one, Gem Miner 2 paid version is similar but better.
The Island: Castaway - Similar to those stand alone Sims story games and has a "Lost" theme to it (the show). This one is free until a few levels in, then you have to pay to continue. You go around and collect fruits, do quests, explore, cook, and there is a story line. Very fun!
Bakery/Restaurant Story - Not sure if this for everyone but I like it to kill time. It's free and it's basically kind of like a bakery/restaurant version of Farmville but cuter and more to do.
Check it out.