Splash Damage is using the DOOM 3 engine for the game, reinforced with the new MegaTexture technology developed by John Carmack. Basically this new tech allows the developers to create a gigantic texture for the game which serves as the battlefield. Designers can set height maps, vegetation, as well as traction. So a big part of the map could be sand, while an asphalt road goes through it. Vehicles will behave differently depending on what they are driving on.

Speaking of vehicles, the game will feature various land and air units. Humans have vehicles such as highly advanced tanks (the game is set about 50 years in the future), while the Strogg forces feature Walkers and other units you've seen in the Quake 4 screenshots and videos. It's important to the designers that you can have fun on foot as well, and they are ensuring that sometimes it's easier to get to an objective by foot than using a vehicle.

Besides the MegaTexture technology, Quake Wars also has improved netcode to allow for more players. A new physics system in place as well. Let's just say you expect to see a lot of Quake Wars stunt videos. Individual wheels can come off, you can rig a vehicle with explosives, you can do donuts, drive a car on its side with two wheels, do barrel rolls in airplanes, etc, etc.