 Complete the following phrase:  Tournament of Legends uses an updated version of High Voltages 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 ESRBs 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 Voltages 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 