This session examines the tools, techniques, and challenges of producing special effects for Bungie’s Halo 3 from an artist’s perspective. The Halo engine’s custom particle system was rebuilt from the ground up to take full advantage of the Xbox 360 hardware. We take a look at the editing tools that are at the heart of that system. Beyond particles, we look at other graphical elements that are orchestrated to Create some of the more complex effect events in the game.