Playing videogames is an increasingly popular way of spending free time. Many resources are often invested in it and it becomes a passion. According to the Dualistic Model of Passion, there are two types of passion for an activity that are characterized by different psychological processes. Harmonious passion is associated with positive outcomes, while obsessive passion is often in conflict with various aspects of one's life, such as romantic relationships. However, there are some factors that can moderate the relationship of passion towards activity and its outcomes. One of them is non – attachment, a mechanism of mindfulness. Relationships between these variables are rarely represented in research and therefore, the aim of this study was to determine some characteristics of videogame playing and to examine the relationship between time spent playing videogames, passion for playing videogames, nonattachment and the quality of romantic relationships. The study involved 290 videogame players - 225 men and 65 women. The results showed that the average daily videogame playing time is 3h 20min, and the average time of the longest continuous playing is 12h 40 min. Most of the time, action and role-playing games are played, most often via computer, in the company of friends or alone. Videogame playing does not often cause conflicts between partners and there is partial partner support for it. Videogame playing time is correlated with both harmonious and obsessive passion. Harmonious passion for video games predicts higher, and obsessive passion predicts lower quality of a romantic relationship. No moderating effect of non-attachment on the relationship of passion for video games (neither harmonious nor obsessive) and the quality of the romantic relationship was found.