Augmented reality is a technology that blends the digital and real worlds by using your camera lens. AR Runner uses this technology as the foundation for its game to get you moving, no matter where you are. Open the app and select the size and shape of the playing field you want, based on your environment. Once that's done, the game will scan the area you've selected and set up a course for you.
From there, look at your phone's screen and hit the checkpoints it suggests as quickly as you can. The free version of this game gives you two types of courses — one in which you have to hit checkpoints in a certain order and another asking you to "punch" through hoops.
The game allows you to play in a single-player mode or with others as you pass the device between you. It also lets you compare your times against all AR Runner players, in case your competitive spirit goes beyond the immediate area. A premium purchase, at a price of $2, gets you two additional game modes, a larger playing field option and different course shapes. One more thought: Do be careful while running that you don't focus too heavily on your screen. There's a risk that you'll trip and fall. It's all fun and games until someone gets hurt, after all.
Free, for iOS.