The video game industry is expanding rapidly and video games have become an important part of our society. However, it is still unclear if the increasing amount of time spent on playing video games causes positive or negative consequences. This research-in-progress paper proposes a model, rooted in the Dualistic Model of Passion, to explain why video games can create addiction or non-pathological flow in video game players based on gamers’ type of passion for video gameplay. Moreover, this research aims to explain the environmental and personal factors that define different forms of passion towards video games. The findings of this research will also clarify the role of emotional reactions during video gameplay on gamers’ subjective well-being.