Halo 3: ODST

This content update brings a bunch of additions and improvements to the game, including the return of two beloved modes from Halo 3 and Halo: Reach, a veritable swath of enhancements to Forge, major sandbox changes, a free new Operation Pass, and more. The free cosmetic "operation pass" which launched aside this update ran from July 30, 2024 to September 3, 2024. It was made available in perpetuity to those who purchased the pass.

Content Update 29 (“CU29”) brings a new Arena map, a Covenant object palette and new Forge features, a new armor core and customization rewards, and the first of three free Operations—starting with the Halo Wars-themed “Spirit of Fire.” This operation will be followed up by "Cyber Showdown III" and "The Yappening II" operations. Playlist refreshes will also launch during CU29, including new map additions to the Big Team Battle, Firefight King of the Hill, and Squad Battle playlists. CU29 will be the first of many future planned updates that will replace the current "season" model, electing instead to provide smaller content drops but at more frequent intervals.

An all-new Battle Pass featuring Flood-inspired rewards, new maps, a new mode, and a sophisticated AI Toolkit for Forge. Coming later in Season 5, Firefight: King of the Hill offers a refreshing twist on the beloved co-op wave-survival mode. Season 5 - Reckoning also brings with it multi-core helmets, Match XP in Custom Games, a new Mark VI reward for reaching Hero Rank, and more.