Halo 2: Anniversary is an Action, Shooting, First-person, Adventure, Simulation, Open-world, Single-player, and Multiplayer video game developed by Bungie. It serves as the second title in the Halo series and offers similar gameplay to the previous one by providing some extra features. During the gameplay, the player plays as a protagonist of the Human Master Chief or The Arbiter.

The game takes the player to the 26th century, where three main groups battle against each other, such as the UN Space Command, Parasitic Flood, and Covenant. These levels contain both the Master Chief and the Arbiter levels, where the main difference between these is the lack of flashlight. The player has to find the hidden objects, such as Easter eggs, messages, and weapons. The core hidden content that a player must discover in each level to get to the advance is a skull.

This game offers a campaign mode that allows the player to complete a series of levels through the storyline. This game offers four difficulty modes, such as Easy, Normal, Heroic, and Legendary, where each difficulty mode contains different health, armor, rank, damage, changes in dialogues, and accuracy of enemies. The character can have two weapons with him in a playfield from the several available weapons.

It allows different weapons for both human and covenant modes and offers the player to ride vehicles nearby to the character. There are several characters in the gameplay with different abilities and skills, and a player can customize the figures accordingly. The game comes up with many different locations, and the player can lock-free more places to play by getting advance.

Halo 2: Anniversary has core features, such as First-person Perspective, Different Weapons, Four Difficulty Modes, Several Locations, Vehicles, Multiplayer Maps, Hidden Objects, and Series of Levels.