Extreme's development began shortly after Bloody Roar 3 was completed. While prior entries in the series were on Sony consoles, the decision was made to move to Nintendo's GameCube primarily because of its hardware specifications.
The creation of Extreme commenced shortly following the completion of Bloody Roar 3. Previous titles in the series had been developed for Sony consoles; however, the move to Nintendo's GameCube was influenced by its hardware capabilities.