pipeline, Factor 5 was able to create the shader needed to produce the visual effect employed by the game's targeting computer. Unlike the first Rogue Squadron game that was almost completely set in the Star Wars Expanded Universe, Rogue Leader more closely follows the narrative of the films. Level designers used the trademark battles from the original trilogy as narrative anchors in the game which allowed them to focus on mission design and content creation. To create mission ideas, level designer Albert Chen researched obscure Star Wars lore. By looking "at everything from the Star Wars role-playing books to the radio dramas and even the Marvel comic books and expanded universe stuff", Chen increased his chances of getting missions approved by LucasArts. An in-house level editing tool called L3D was used to design missions. Around since the development of the first Rogue Squadron game, L3D was outdated but Factor 5 did not have the time to program a new level editing tool. It proved instrumental in Rogue Leaders development, however, despite its flaws. The theme music from Rogue Squadron was re-arranged and used for Rogue Leader. Roughly half of the music featured in the game is John Williams' film score with the other half being new, original music from Factor 5. Sound designers also had access to the LucasArts and Lucasfilm archives, which helped keep the game's audio sound authentic. The developers tried to make the game as close to the movies as possible, studying ILM's special effects, using some of the same sound effects, music and voice acting from the films. The original actor, Denis Lawson, was also hired to record new lines for Wedge Antilles. Having developed the GameCube's MusyX audio system in-house, Factor 5 played an important role in the development of the console's audio hardware and were therefore able to build Rogue Leaders audio on tools they were intimately familiar with. MusyX allowed for seamless blending between streamed and real-time music, giving dynamic sound that could change according to the gameplay. Late in the development process, the team added five-channel surround sound to the game by introducing Dolby Pro Logic II (DPLII) technology into the MusyX system. Rogue Leader was the first game on any platform to use DPLII. Cooperative remake Factor 5 did not have enough time to explore adding a multiplayer mode during development of Rogue Leader because of the short development cycle. When