"As Raven has been building QUAKE 4 with the DOOM 3 engine for a little over three years now, the technology has continued to evolve, with Raven adding improved environmental effects and redoing a lot of network code. In addition to handling large-scale outdoor areas, you'll also get to control vehicles on occasion, the most common of which will be a hovertank and a mech walker. We did get to see the walker in action, putting Kane in combat against a number of similarly towering enemies, providing a nice change of pace to the other scenes throughout our demo."