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Horizon Lunar Colony
Horizon Lunar Colony2.jpg

Earth's moon
Modular base, lunar surface

Horizon Lunar Colony is an Assault map in Overwatch.

Official Description[]

Built as a first step towards humanity's renewed exploration of space, the Horizon Lunar Colony’s goal was to examine the effects of prolonged extraterrestrial habitation—on human and ape alike. The scientists' research proved incredibly promising...until, suddenly, all contact and communications with the base were lost.


A first step to the stars.
~ Poster tagline

The Horizon Lunar Colony (otherwise designated "Horizon One")[1] is a moonbase constructed by Lucheng Interstellar,[2] operated by its Lunar Ops branch.[1] It was established as part of humanity's renewed focus on space exploration. In addition to the scientists that worked there were a group of genetically enhanced gorillas that were intended to test the effects of prolonged habitation in space.[3] Towards the colony's last days, some of the gorillas had demonstrated adverse reactions to the genetic therapy, possibly compounded by life on the colony itself. A group of gorillas had established themselves as well-known troublemakers to the staff, and had put even some staff in the base's infirmary. It was agreed that the gorillas should be confined to their quarters, but Dr. Harold Winston pointed out that not all of the gorillas had reacted adversely to the therapy. He didn't know if shipping them to Earth would be a viable solution, if only for the medical issues that would present themselves. He advised putting a stop to the therapy.[4]

The test subjects rebel

The experiments came to an end when the gorillas launched an uprising, killing the scientists and claiming the base for their own.[3] It is known that in one of the last recorded messages, Dr Winston reported a malfunction at airlock E-35, and requested fellow staff members join him.[4] It has further been implied that this was a ploy by the gorillas, who got the scientists in the airlock and then opened it, venting the humans onto the lunar surface to die from asphyxiation.[5] For the gorillas themselves, it has been indicated that they are so far happy to stay within the base.[6] Specimen 28 was one of the only exceptions, who built a rocket out of makeshift parts and successfully made it to Earth.[3] Specimen 8 also escaped from the colony after engineering an escape pod and secretly attaching it to Specimen 28's space shuttle. [7]

Years after the base's fall, Lucheng Interstellar revealed in a press conference that the colony's databases and monitoring systems were still up and running. While no direct communication was established with the facility, the company successfully retrieved interpersonnel logs sent days and moments before the base lost contact with Earth. It shared the transmissions with the press. It later released its first image of the colony's still-operating integrated monitoring systems. A Lucheng spokesperson told Atlas News that the connection was unstable, but that the company was working around the clock to gather new information.[4]


The map has a Point A (the telescope) and a Point B on its attack route. The base may be exited via airlock doors. Outside the base, players will fight in low gravity.


The layout of the colony

  • Atrium[5]
    • Hydroponics Lab[5]
  • Infirmary[4]
  • Observatory[4] (equipped with a radio telescope)[5]
  • Personal quarters (numerous)[4]
  • Training facility[5]

Known Staff[]

With the exception of Dr. Chao, all members of staff were killed by the gorillas.

Test Subjects[]

Two of the base's test subjects

At least some, if not all of the gorillas were named after the human staff.[4]


An advertisement for Horizon

The idea of a moon map was present from the earliest days of the game's development. It kept being pushed back, as the developers wanted to do the idea justice in both story, and how low gravity would be handled.[8] The map was created in order to introduce a new Assault map to the game. Initially, all of the map took place in low gravity. However, it felt gimmicky, and it broke the game in some ways, at least as far as competitive balance went.[9]


  • Contextual storytelling is employed within the map. This includes Winston's room, and computer screens, where players can look at said screens to get information on the scientists that worked at the colony, along with the test subjects.[9]
  • One of the announcements on the base has the line "Remember Children: Imagination is the essence of discovery." This is Winston's first quote when being selected.
  • It is the only map in the game not to take place on Earth.
  • The attacking team can view Earth via the telescope by holding down the default reload button. They can also open/close the doors for the telescope by enabling the pressure sensor on the floor



  1. 1.0 1.1 2016-12-17, BlizzCon 2016 Overwatch Animated Shorts Panel Transcript. Blizzplanet, accessed on 2017-01-18
  2. 2016-10-25, Lijiang Tower. Blizzplanet, accessed on 2016-10-26
  3. 3.0 3.1 3.2 Winston, Blizzard Entertainment. Accessed on 2014-12-09
  4. 4.0 4.1 4.2 4.3 4.4 4.5 4.6 2017-05-30, NEW DETAILS EMERGE ABOUT POSSIBLE FATE OF HORIZON LUNAR COLONY. Blizzard Entertainment, accessed on 2017-06-18
  5. 5.0 5.1 5.2 5.3 5.4 2017-05-31, Horizon Lunar Colony - New Map Preview - Overwatch. YouTube, accessed on 2017-06-22
  6. 2017-05-16, Overwatch Lore - Michael Chu Reddit A.M.A Summary! | Hammeh. YouTube, accessed on 2017-05-18
  7. 2018-06-29, Developer Update | Introducing Wrecking Ball | OverwatchYouTube, accessed on 2018-06-29
  8. 2017 Year in Review: Overwatch, Blizzard Entertainment. Accessed on 2017-10-09
  9. 9.0 9.1 2017-05-31, Developer Update | Horizon Lunar Colony | Overwatch. YouTube, accessed on 2017-06-22