Cut Halo Online levels

Due to the cancellation of Halo Online, several multiplayer maps and a single-player training scenario were cut from the game. The map data is largely gathered from the files of the MS30 build of the game, wherein map names and descriptions can be found. Some map files have the prefix, indicating the map was built for the Saber3D engine employed by Saber Interactive and is thus built wholly new for the game. Other maps returning from prior Halo games do not have this prefix, indicating they were to be 1:1 ports.

This page lists only maps which never made it into a publically-accessible build of Halo Online. For a list of all other Halo Online maps which did make it into the playable builds, see here.

Tutorial
Named  in game files for the MS30 Halo Online build, this level would have been set on Anvil Station, and serve as an introductory tutorial for new players starting the game. Several pieces of released concept art for the level indicate the level was to involve a shooting range and Covenant automated turrets.

Cold Storage remake
Named, little is known of this map aside from its name and description. The description suggests this map would be a Covenant-themed remake of the maps Chill Out and Cold Storage. Some related text strings indicate this map may have been intended to be called "Abeyance" in the final game.

Drydock
Named  in the MS30 build, this map's description indicates it would have been set on High Charity. Several pieces of released concept art, shown below, were named "drydock" and may be for this level.

Lockout
Named  in the MS30 build, this map was presumably a remake of the Halo 2 map Lockout. Concept art has been released for this map, depicting a possible setting similar to the map Haven on Requiem.

Powerhouse remake
Named  in the MS30 build, the map's name and description suggest this would be a remake of the Halo: Reach map Powerhouse.

Sky bridge
Named  in the MS30 build, this map was to be set in Seongnam, Korea.

Waterfall
Named  in the MS30 build, little is known of this map. Several released pieces of concept art with the name "waterfall" in their filenames have been released and likely correspond to this map, shown below. Some text strings indicate this map may have been intended to have the final name of "Whiteout".

The map will be implemented into the Halo 3 component of Halo: The Master Chief Collection in Season 6.

Other multiplayer maps
The following maps are referenced in the MS30 text files, though beyond names no information is provided for these maps. As such, they are listed below. They consist of Halo 3 multiplayer maps, and all use the same map filenames as those used in the original Halo 3 game, indicating they were to be ported without any changes.

Firefight maps
Some text strings in the files reference the filenames of several Halo 3: ODST and Halo: Reach Firefight maps. It is unknown if they are simply leftover assets in the engine from those games, or whether Firefight was a planned gamemode intended to be included in Halo Online.

Beachhead
Named, this map's name indicates it may have been a remake of the Halo: Reach Firefight map Beachhead.

Other Firefight maps
These firefight maps are referenced in the text files by name;