Xbox System Link: Why Each Console Needs Its Own Game Disc

No. System Link requires a separate game disc (or digital license) in each console.

Why

• Architecture: Each Xbox runs a full instance of the game executable from its own DVD/HDD.
• Data Access: Games stream assets (textures, audio, maps) from disc in real-time. One disc cannot feed 2–16 consoles simultaneously.
• License: Each console verifies the disc's authenticity (wobble groove, encryption) at boot.

Exceptions (Not System Link)

• Pass-the-Controller / Hotseat: One console, one disc, multiple players taking turns (e.g., Halo campaign co-op splitscreen, Fusion Frenzy).
• Single-Console Multiplayer: Splitscreen (2–4 players) on one Xbox — uses one disc.
• Xbox Live (Original): Each console + disc + Gold account.

Modern Context

Original Xbox System Link works over LAN (crossover cable or switch). Xbox 360/Xbox One/Series also support System Link for backward-compatible titles (each console needs the game installed/disc).

Bottom line: For a 4-player Halo LAN party, you need 4 Xboxes, 4 copies of Halo, 4 TVs, and a switch.