Las Vegas! is a popular dice game that Ravensburger put together last year. It's not exactly the most complicated board game on the block (you roll dice, and then can place them into certain numbered slots that represent stakes in money-making casinos), but it's fun for families especially, and provides a nice relatively casual mix of luck and skill.
Perhaps because the game is so approachable, the German company Ravensburger has elected to bring an iOS version out to iPhone and iPad, and you can now pick it up on the App Store for US$2.99. Just like the real-world game, the iOS version is fun but simple -- you select your players (or you can play online via Game Center), you roll the dice and then you try to lay them out in casinos wherever you think they'll earn you the most money. Play goes on like this for four rounds, at which point the player with the most money wins. There's also a more complicated variant where you get a number of neutral dice that you can use to block other players, and Ravensburger has smartly included that option here, which provides some extra replayability, especially for gamers seeking some more challenging strategy.
The game's well-presented (I did have one small bug when starting a game, but a quick reset of the app fixed it anyway), with plenty of Vegas-style sounds and some nice casino architecture. There's also the ability to earn money from game-to-game, though I'm not sure what that's used for just yet -- maybe Ravensburger plans to put in more themes and casinos as time goes on. Currently, there are no in-app purchases at all, and I appreciate that. What you see for your $2.99 is what you get, and the game that's there is worth the price if you're interested.