"Tournament of Legends" uses an updated version of High Voltage's Quantum3 engine in use in their games "The Conduit" and "The Grinder", which was also presented at E3 2009 alongside an early version of "Legends", titled "Gladiator A.D.", which was much different than the final product, particularly with respect to age-appropriateness, theme and accessory support. Before "Gladiator" was retitled "Legends", it employed a visual style not dissimilar to the film "300", including the use of slow motion during power attacks. Pursuing a more grounded, realistic and mature approach to the premise of gladiator combat, the game was planned to employ attacks and finishing moves with graphic violence consistent with the ESRB's Mature rating, as well as support the Wii MotionPlus for true-to-life motion controls. However, by the time High Voltage Studios announced in February 2010 that Sega would publish the game, as it had done for High Voltage's recent Wii games, the game was retitled as "Tournament of Legends" and re-themed into a more upbeat, colorful fighting game about mythological figures that would be less violent and support the Classic Controller instead of the Wii MotionPlus. In the following E3, close to the game's final release, High Voltage confirmed that they were looking into the possibility of porting the game to the PlayStation 3 and Xbox 360,&lt;ref name="PS3/360"&gt;&lt;/ref&gt; but there were no further developments about the status of such versions in the years that followed.