Who Killed the Yourself!Fitness Sequel?

Roger Avary. Apparently this lawsuit is still active and there's no point in releasing a sequel under that sort of unresolved threat.

Pulp Fiction co-writer Roger Avary has sued Microsoft Corp. for $30 million, claiming the software giant stole his idea for a virtual yoga game. The Academy Award-winning screenwriter has also asked a judge to stop Microsoft and responDESIGN from selling Yourself!Fitness, the first fitness game program for the Xbox.

According to his lawsuit, Avary met several times with the Microsoft team, and in 2003, pitched them a detailed concept for a videogame designed to lead players through yoga poses using Microsoft's Xbox game console.

A source within ResponDesign confirmed the unlikelihood of a sequel but added "it is still remotely possible, if international sales are good and the lawsuit ever gets settled."