Tetra's Trackers was originally planned as a stand-alone game, but this idea was scrapped, and instead this game was released as a third mode in Four Swords Adventures. But only in the Japanese version, possibly due to localization issues. For example, you can speak your name to the microphone and Tetra will be able to repeat it. Easy to be implemented in Japanese, but hard in other languages. Although English test video of this game/mode exists somewhere on the web (in this video, four players are referred as "Mr. A", "Mr. B", Mr. C" and "Mr. D"), that's the only good news. The bad news - the English version of Tetra's Trackes was untimately scrapped.Tetra's Trackers isn't a game! Instead it was released as a mode in Four Swords Adventure (Japan) which I do have listed.