Initially conceived as a single-player entertainment tool, the Fusion Player was expanded into an online interactive game for two players. Integrated to the gaming interface of Windows Live Messenger, it then allowed two users to have fun while creating music mixes within the chat window of the instant messaging client. At the end, the resulting music sound could be recorded and shared with other friends. The game reached 116,488 unique visitors per month and 75% of all users who accessed the game played it.