Positive emotions are considered one of the core elements of positive mental health. In the digital era, young adults often derive positive emotions from video games. However, after decades of studies on negative emotions in video gaming, little is known about how video games contribute to the positive emotional experience and how this experience can be further optimized. We will focus on one such process, i.e., increasing positive emotions by interacting with others. We will present three studies that show how players derive more affective benefits from the presence of others during gaming. Study 1 was a laboratory experiment in which participants (N = 120; 66% male) experienced a significant increase in positive emotions when streaming the Among Us gameplay to others, compared to playing for personal enjoyment. Specifically, we found strong eustress (i.e., positive stress) response - large increases in positive emotions, intense physiological arousal, and challenge rather than threat stress appraisal. Study 2 was an outdoor gaming experiment (Pokemon GO) in which players (N = 40, 75% male) increased their positive emotions (amusement), arousal, and prosocial motivation when playing with friends relative to playing single. Study 3 was an online longitudinal project with esports players (N = 291, 50.2% male). It showed that players who share their gaming accomplishments with other players and receive constructive feedback are more likely to increase positive emotions and psychological resources (optimism). In contrast, critical feedback reduced their self-esteem and increased gaming addiction symptomatology. All reported effects with alpha < .05. These studies suggest that video gaming provides intense daily positive emotions, especially when boosted by the presence of others and when others provide constructive assistance. This extends the focus on video gaming from the primarily psychopathological perspective toward its application in supporting the affective component of positive mental health.