Smartphones have surged into popularity in recent years, which has dramatically changed the way people live, work, and have fun. Smartphone games are an important type of Smartphone applications, which attract many software developers. However, they still have not caught much research attention in the software dependability community. In this paper, we study the characteristics of over 2000 Android games with software analysis techniques, with a focus on their dependability issues. Our study suggests that a new security paradigm is of great importance to Smartphone games to prevent potential privilege abuse. Moreover, a new set of testing and debugging approaches should be specifically tailored for Smartphone games, since games are becoming more complicated. Our study also reveals that most games are not specifically optimized according to the user pattern of Smartphones. We expect these open problems can bring more attentions to the software dependability community.