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Pico Life is envisioned to be an augmented reality game in which 3D characters will be controlled by hand gestures on Android smart phones. Pico Life is currently powered by two mobile optimized engines: (1) The computer vision engine that runs our advanced object tracking program for hand tracking and (2) The 3D engine that runs our 3D models for the characters in the game. In the near future, we will be adding yet another mobile optimized engine, namely, the augmented reality engine. In this paper, we will present our work on object tracking and 3D modeling for Pico Life and contrast the performances of the two engines on three different mobile platforms, namely, Texas Instruments' OMAP3630 (Motorola Droid X running Android Gingerbread), Qualcomm's MSM8660 Snapdragon (HTC Evo 3D running Android Gingerbread) and the Texas Instruments' OMAP4430 (Blaze Development platform running Android Gingerbread).