Zombie Panic! Source

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Zombie Panic! Source
Zombie Panic box.JPG
Zombie Panic! Source
Developer(s) Monochrome Games
Distributor(s) Steam
Engine Source Engine
Platform(s) Microsoft Windows

December 28, 2007 (v1.0)
October 3, 2008

October 29, 2009 (v2.0)
February 4, 2011 (v2.1)
April 25, 2011 (v2.2)
(Steamworks Release)
July 26, 2012 (v2.3)
October 31, 2012 (v2.4)
Genre(s) First-person shooter
Mode(s) Multiplayer

Zombie Panic! Source is a multiplayer Half-Life 2 first-person shooter modification that pays homage to the popular Zombie genre of film and games. It is the sequel to the Half-Life modification Zombie Panic!, and is available to download for free.


The game features four modes of gameplay, Zombie Panic! Survival mode, Zombie Panic! Objective mode, Zombie Panic! Hardcore mode, and ZPA mode. In survival mode, the zombies start with a number of lives based on the amount of players which are slowly depleted as zombies are killed and subsequently come back. In this mode, the round can only be won if one side completely destroys the other or after 15 minutes and survivors are still left standing. A Zombie life is gained if a human is killed and the human that dies, respawns on the zombie team. Objective mode introduces a set of objectives the survivors must complete. The zombie team has an infinite number of lives in objective mode, so zombies can always join the action again if they are killed. Hardcore mode dramatically increases the strength of the undead horde. Survivors must survive for five minutes rather than 15, but this shorter time to beat is compensated by more zombies at the start of the round, all of these initial zombies are capable of infection (75% chance when hitting a survivor) and firearms and explosives do less damage. ZPA mode includes infinite respawns for both the humans and zombies (survivors in waves of 20 seconds), a main objective (usually hold a control point for a certain amount of time) and side objectives (winnable by both teams, gives more carriers for zombies, more weapons for humans).

Scattered throughout the levels are various forms of furniture, decor, and miscellaneous items that can be used to block zombies and/or barricade a room or location of choice. Also available is a dedicated barricading-tool; the hammer, which can be used to nail boards to walls.


Survivors start with a handgun and a melee weapon. Survivors have access to a wide variety of firearms and melee weapons alike to aid them in fighting off the zombie team, but they must be obtained first as they are scattered across the map.


The zombie team will start in small numbers, with the goal of thwarting the survivors' attempt at survival or completion of objectives. Zombies have an alternative vision mode which brightens any light sources present and causes survivors to appear with a red aura, and green for infected survivors.


The Carrier zombie is a pale, slightly stronger zombie that carries a set (10% default) chance of infection when attacking a survivor. There is only one carrier each round, however more are present in some game modes (e.g., hardcore mode, ZPA). If a human is infected, they will eventually turn into a zombie. When infected, the survivor becomes vulnerable to friendly fire, allowing other survivors to kill them before they turn. These humans change from the normal red to green in the perspective of attacking zombies using zombie vision. In ZPA, to replace infection, there is wounding, where damage is caused to the survivor over a period of time. In Hardcore mode, the chance of infection is modified to be 75%.


Weapons and ammunition both slow the player down. This forces the player to ration their inventory, unlike most first-person shooter games. A feature of the game involves the "panic" button (P hotkey) that causes the player to drop all inventory so they can get a boost in movement when fleeing from zombies.


Zombie Panic! Source began development in early 2005, and released their first public beta on December 28, 2007.[1][2]

In 2006, Zombie Panic! Source was picked as one of ModDB's top 100 unreleased mods of the year.[3]

In 2007, Zombie Panic! Source won ModDB's player's choice unreleased mod of the year.[4]

The mod was also featured in the March 2008 issue of PC Gamer, UK Edition.[5]

On October 8, 2008, it was one of the first five "mods" to be released on Steam by Valve under their new commitment to easily accessible quality user-created modifications in the Steam Store.

On October 29, 2009, Zombie Panic! v2.0 was released earlier rather on October 31, 2009. Existing players received an automatic update.

On the Zombie Panic! Source website on August 6, 2010 they announced a successor to Zombie Panic! Source. The successor is called Contagion and is an indie game released for the PC on October 24, 2013.

See also[edit]


  1. ^ Contact Michael McWhertor: Comment (2008-01-02). "Zombie Panic Source Brings Zombies, Panic To Source". Kotaku.com. Retrieved 2012-11-09. 
  2. ^ "Zombie Panic: Source - Blue's News Comments". Bluesnews.com. 2007-12-30. Retrieved 2016-08-16. 
  3. ^ "Top 100 - 2006 Mod of the Year Awards". Mod DB. Retrieved 2012-11-09. 
  4. ^ [1] Archived February 8, 2008, at the Wayback Machine.
  5. ^ PC Gamer #185, UK Edition, p 94. March 2008

External links[edit]