Hardy LeBel, former lead multiplayer designer for Halo: Combat Evolved, recently recalled that the game's multiplayer mode was nearly canceled due to schedule pressures. To keep this content in the game, a team of just four people continued development over the remaining approximately 18 months.
At the Marty Army LAN Party event, LeBel stated that during production, Bungie founders Jason Jones and Alex Seropian summoned him and lead network engineer Michael Evans, demanding the removal of the multiplayer component to ensure the game would launch alongside the first-generation Xbox. LeBel strongly opposed this decision, arguing that multiplayer had been a core element from the project's inception. Seropian subsequently left the responsibility of retaining the mode in their hands.
At the time, the entire multiplayer team consisted of only four people and lacked environment artists. LeBel had to learn 3ds Max from scratch and personally create the multiplayer maps. The delayed launch of Xbox Live also prompted the team to shift direction, focusing development efforts on local connections and split-screen play.
Bungie initially envisioned a large-scale war simulation gameplay similar to what would later become the Battlefield series, but limited resources forced the team to abandon heavy positional warfare. Instead, they emphasized dynamic arcade-style physics for vehicles and designed maps that were easier to grasp.
Halo: Combat Evolved was finally released on November 15, 2001. The preserved multiplayer mode subsequently became a significant factor in the success of both the game and the Xbox platform.