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Halo: Online is an unreleased free-to-play Halo game that was available to Russia exclusively. The game only included Matchmaking as the game mode. The game was built on the same engine as Halo 3.


The game plays similarly to other country exclusive games like Call Of Duty Online or Counter-Strike Online. It includes leveling up to buy other weapons.


The game includes a few playable maps. Of the playable maps, two maps were seen ported to Halo: Master Chief Collection, with only one map in retail currently. Different builds would contain different sets of maps. Some of the maps are inspired by maps of prior Halo games. The following maps can be found in any of the builds:

  • Diamondback - "Hot winds blow over what should be a dead moon. A reminder of the power Forerunners once wielded." This map was inspired by Avalanche.
  • Edge - "The remote frontier world of Partition has provieded this ancient databank with the safety of seclusion." This map was flighted for Halo: Master Chief Collection but was removed in retail.
  • Icebox - "Downtown Tyumen's Precinct 13 offers an ideal context for urban combat training." This map was inspired by Halo 2's Turf map.
  • Reactor - "Being constructed just prior to the Invasion, its builders had to evacuate it before it was completed." The map seems to be influenced by ODST and Reach firefight maps.
  • Waterfall - "The UNSC constructed many secret holdfasts during the final years of the Covenant War." This is the only map that remains ported to and playable in the Halo: Master Chief Collection currently.

Some other maps like Drydock and Sky Bridge were possibly planned maps that were referenced in the games' tags but were canned as a result of cancellation. Other maps such as Guardian, High Ground, Last Resort, Narrows, Sandtrap, Standoff, The Pit, and Valhalla were ported straight from Halo 3.

Modified Weapons[]

The game introduced weapons that had modifiers, such as rate of fire, the power or damage of each round, accuracy of each round, and even weapons with scopes. Each modification affected how many rounds each clip could hold. Modified weapons have not been seen in any other official released Halo game.


A mod name by the name of ElDewrito was created as a result of people discovering Halo: Online. The modification originally started as a modified frontend that utilized dedicated servers and Virtual Private Networking to play matchmaking. The mod progressively changed the gameplay style to abandon the Halo: Online feel and return the Halo 3 style, such as reimplementing dual-wielding and power ups.

Legal Issues[]

The game has been threatened with legal action twice currently.

  • In 2015, Microsoft issued a DMCA takedown to the eldorito Github repository hosting the code to the mod.
  • In 2018, following the release of ElDewrito, on April 24, 2018 Microsoft and 343 Industries had threatened legal action against the mod and requested they take down the file they were redistributing as the game's files that were included inside the file were legally protected. Following Microsoft's orders, the mod was reuploaded without the game's files and instead the team encouraged players to download the game build from somewhere else.

According to the statement in 2018 on the major release of the ElDewrito mod, 343 Industries claimed that they would be willing to work with the mod team on a project despite threatening legal action. Following the announcement of Halo: Master Chief Collection's port to PC in 2019, the team has stated they will be working alongside 343 Industries to make the game moddable, but has refused to halt development on the mod.


There are currently 19 builds of Halo: Online available.

  • Halo: Online (March 20, 2015)
  • Halo: Online (April 10, 2015)
  • Halo: Online (April 17, 2015)
  • Halo: Online (April 21, 2015)
  • Halo: Online (May 19, 2015)
  • Halo: Online (June 13, 2015)
  • Halo: Online (June 29, 2015)
  • Halo: Online (July 15, 2015)
  • Halo: Online (August 1, 2015)
  • Halo: Online (August 7, 2015)
  • Halo: Online (August 19, 2015)
  • Halo: Online (August 27, 2015)
  • Halo: Online (September 3, 2015)
  • Halo: Online (September 16, 2015)
  • Halo: Online (September 17, 2015)
  • Halo: Online (September 25, 2015)
  • Halo: Online (October 1, 2015)
  • Halo: Online (October 15, 2015)
  • Halo: Online (November 24, 2015)