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The Heroes' Tomb
— SG/MY description

Abyss 3 (zm_abyss3) is an official Zombie Mods map in Counter-Strike Online.


Abyss 3 is the third Zombie Mods exclusive map in the Abyss series. It was released alongside with Zombie: The Hero and also available in other Zombie Mods. This map takes place in the basement of Rex Research Institute. It has a bunker that can prevent zombies from coming in. This map enables the players to swim. Try to close the bunker's doors first before the zombie appears.

Official description[]

A year after the incident at Rex Laboratory, the unidentified sound of machines was heard coming from the closed factory located near the laboratory. In order to investigate the noise, members of the security team entered the factory but radio contact was lost for over an hour. In response, government agents infiltrated the factory only to find that it had already become a facility for transforming deceased corpses into Zombies. The secret behind the increasing number of Zombies was the factory itself.

  • Humans: Survive the Zombie attacks until reinforcements arrive. Watch for fellow comrades who may turn into Zombies. You are authorized to kill all Zombies.
  • Zombies: Those who have turned into Zombies must kill the Humans and turn them into Zombies. Zombies have higher HP and faster speeds than Humans.

Release date[]

Dbarrel gfx

This map was released alongside Zombie: The Hero and Double-barreled shotgun on:

  • Singapore/Malaysia: 21 December 2011 alongside Battle Veteran.
  • Indonesia: 15 February 2012 alongside Battle Veteran.
  • Turkey: 20 November 2013 alongside Criss and Yuri.

This map was released alongside Open Beta Test on:

  • CSN:Z: 23 September 2014.
  • Vietnam: 26 March 2015.



  • The front door of the bunker can be destroyed.