368 iPAD AND iPHONE TIPS AND TRICKS Some games are initially free of charge and offer a wonderful game-play experience. However, to access certain gaming features, obtain specific in-game items, or reach otherwise locked levels, you'll need to make in-app pur- chases, which over time can get expensive. These in-app purchases are typically optional but will greatly enhance your game-play experience. In some cases, a free game will offer just one or two sample levels or just a preview of the game play, but will ultimately require you to purchase or upgrade to the paid version of the game to experience it in its entirety. CAUTION TIPS FOR FINDING GAMES YOU'LL LOVE With literally tens of thousands of games to choose from, and more being intro- duced every day, there are several strategies you can use to quickly find games that'll appeal to you as you explore the App Store or Game Center.