Mood: The mood of this video appears to be energetic, inviting, and motivational. The theme seems to be centered around a competition or a challenge, as indicated by 'PARTICIPATE NOW' and 'GREATEST OF ALL TIME'. The overall emotion evoked is one of excitement and encouragement, urging viewers to take part in the event or activity.

Environment: The setting seems to be a digital or virtual environment, given the presence of app store links and a logo. The background features a gradient of blue and purple hues with a pattern of dots, suggesting a modern and dynamic atmosphere. The presence of a woman in a dress suggests a contemporary and possibly celebratory setting.