Top Countries with the Longest Total Duration for UFO 2 Extraterrestrials: Battle for Mercury from Review Channels

This list represents countries of YouTube review channels based on the longest total video duration across all videos for UFO 2 Extraterrestrials: Battle for Mercury. This only includes channels that have created review videos. A channel associated with a country will have its numbers added to their country's total. Numbers are retrieved via the YouTube API and updated daily.