Ubisoft's Just Dance 3 Autodance has been downloaded more than one million times in the UK on iOS and Android devices.
The app was released to promote the best-selling dance game back in November, and allows users to create music videos from short clips they film with their smartphone's camera.
More than six million user videos have been created to date, with 1.5m uploaded to Facebook profiles and more than 200,000 made available on the official Autodance YouTube channel.
Ubisoft claims the app was even No.1 in the Free Music App chart on New Year's Day.
"Just Dance 3 is fun, social entertainment for home consoles and the Autodance App communicates this virally on smartphones to a broad, socially connected audience," said Ubisoft's UK head of digital marketing Alan Dykes.
"Its phenomenal user-generated success mirrors the tremendous sales of the boxed product and Autodance's continued high download and usage volumes will reinforce Just Dance's iconic brand identity with the existing userbase and guarantee a steady stream of new buyers."