Download size

How many GB is Halo 3: ODST?

20 GB

That makes it bigger than 79% of Shooter games we have measured.

The median Shooter game needs 4 GB; the largest tenth start at 40 GB.

Leave at least 29 GB free: games need headroom to unpack updates.

The figure is the storage Steam lists as required for this game, not a measured download.

Halo 3: ODST is a first-person shooter set in New Mombasa during the Covenant invasion. The campaign follows the Rookie, an Orbital Drop Shock Trooper, as he searches the city and reconstructs the events that separated his squad. The game includes the complete Halo 3 multiplayer map collection, with three additional maps, and introduces Firefight, a cooperative mode in which players face waves of Covenant enemies.