Random iPhone App of the week: To celebrate the Memorial Day launch of The Tull Family Tiger Trail exhibit at the San Diego Zoo Safari Park, an app was created where players take on the role of a Sumatran tiger. With fewer than 400 Sumatran tigers roaming the wild today, Tiger Trail exposes many of the threats to the survival of this endangered species. In the game, players are challenged to collect food to build their tiger’s strength, and navigate them through blazing fires and poacher traps to a protected reserve. The app is available for free in the App Store, or players can visit www.tigertrailgame.com to play the desktop version. RED Interactive Agency created the app.