iMore has posted an article listing their selection of best iPhone/iPod touch games in 8 different categories: strategy, shooter, sports, casual, physics, action, role-playing, and racing. Most of the games also have a version for the iPad. The article highlights three top games in each category. (Note, though, that although the games are completely free to download and play, most of them are "freemium" titles, meaning that if you want additional levels of play, etc, you'll need to make an in-app purchase.) There are a lot of familiar titles here, such as Angry Birds Free, Fruit Ninja Lite, Tiny Tower, Jetpack Joyride, and Temple Run -- games that have made many other lists, suggesting that you can't go wrong giving them a try. Plus, they're all highly rated in the App Store.