Nowadays, it becomes a widespread and frequent practice that one content as a source is converted into diverse media formats. However, it is hard to answer the question whether the converted content might become successful again. That is mainly because one needs to have clear understanding about the characteristics of the target media format. This explains the phenomenon that there are very few successful movies which have been adapted from successful digital games. Thus, it is essential to conduct thorough and sufficient researches on the success factors of the adapted movies. The objective of this research is to investigate and analyze common factors of successful movies from digital games in terms of their visuals and narratives. We have found that successfully adapted movies from digital games shares three commonalities in the work of adaptation for effective cinematic impacts. Firstly, the adaptors of the successful movies have composed scripts with riveting storytelling through simplification, compression and removal of the original story. Secondly, they have satisfactorily re-implemented the original game avatars in the process of adaptation. Finally, they have effectively discovered inherent attractiveness of the original games and incorporated into the target movies with faithful following of cinematic grammar. We expect that our work contribute to reduce failure rate of the prospective movies converted from games by the proposed analysis of success factors shared among successfully adapted movies through the proposed case studies.