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During the past decade, there has been steady developments in the area of computer-vision based hand-gesture recognition (HGR) technologies, and expansion in the environments they are available for. Hand-gesture input, combined with head-mounted displays, has become the principal interaction method in virtual reality games. It also shows promise in other areas, such as sign-language recognition, interactive museum exhibitions, and interactive displays available in public spaces. This paper explores the possible introduction of HGR-based interaction in mobile games, based on the identification of key concepts in literature examining the aforementioned areas. The result is a proposition of four general heuristics guiding the design and development of mobile games based on HGR as the primary interaction method.