Halo: Combat Evolved Anniversary features ten terminals scattered throughout the campaign, as well as one final terminal previously available through Halo Waypoint. These terminals are imperative for fans of the Halo lore, as they describe the history of 343 Guilty Spark's work on Installation 04, as well as help better understand the often confusing relationships between the Monitor, the Flood, the Covenant and the UNSC.

These terminals aren't just for the plot enthusiasts, but also for the achievement hunters. These terminals will land you five gamerscore a piece in The Master Chief Collection, plus 30 gamerscore for collecting them all. Those playing Halo: Combat Evolved Anniversary for the Xbox 360 will earn themselves 10G for finding the first, 25G for finding five and 50G for finding the whole lot of the terminals.