The game's engine, like Jedi Outcast, is still based on id Software's Quake III engine but it's pretty clear in our E3 demo of Jedi Academy that Raven has done a lot to improve upon it, including better character models and lighting. Indeed, when our Jedi sliced into the Rancor it actually left scars on the creature (not that it helped much; the Rancor eventually killed us). More drivable vehicles like the Scout Walker from Jedi Outcast will be featured in Jedi Academy and multiplayer modes will be present in both the PC and Xbox versions of the game. One of the new gameplay modes, Siege can best be described as Jedi Academy's version of Assault, which should appear to the multiplayer team community. As with Jedi Outcast, the plan is for the PC version to have unsupported mod tools released after Jedi Academy ships to stores.