Map prefixes

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Common traditional naming conventions for maps for some Half-Life and Source games use a small prefix (often two or three letters) followed by an underscore at the beginning of the map name. For example "de_dust", where "de_" is the prefix and "dust" is the map name. In addition, some custom maps can be marked with unofficial prefixes, either to denote its nature or to brand it.

To do: Add descriptions and prefix names for those who do not have any.

Official games

Counter-Strike, Counter-Strike: Condition Zero, Counter-Strike: Source and Counter-Strike: Global Offensive

Prefix Map Type Description
Official (general)
cs Hostage Rescue In Counter-Strike: Global Offensive, maps with this prefix will show Hostage Scenario Mission in the loading screen.
de Bomb Defusal,
Arsenal: Demolition and Wingman
In Counter-Strike: Global Offensive, maps with this prefix will show Bomb Scenario Mission in the loading screen.
Official (Counter-Strike Counter-Strike , Counter-Strike: Condition Zero Counter-Strike: Condition Zero and Counter-Strike: Source Counter-Strike: Source )
as Assasination Counter-Strike and VIP Mod only
es Terrorist Escape Now defunct, originally official
tr Training Maps Only official appearance in Counter-Strike 1.5 retail.
Official (Counter-Strike: Global Offensive Counter-Strike: Global Offensive )
ar Arsenal: Arms Race For game mode descriptions, see CS:GO Game Mode Commands.
coop Co-op Strike Scenario
dz Danger Zone
gd Guardian Scenario
aim Aim Arena Has teams that are restricted to one class of weapon and have no objectives except to eliminate the opposing team. Emphasis is placed on player's aim.
awp AWP Arena Restricts players to AWPs only
bhop Bunny Hop Maps
cp Control Points
dm Deathmatch Arena Used by deathmatch mods for CS and CS:S. These maps are usually small and simple like "fy" maps but adapted in order to have multiple spawn points.
dr Dead Run Race mod (unofficial gamemode)
fy Frag Yard / Fight Yard Map with an assortment of weapons spawning on the ground versus player inventory.
fun Fun Map Map with some strange objectives, contraptions or other mysterious things.
mg Minigames Mostly obstacle courses and maps that feature a wide selection of smaller games.
gg Gun Game (Original Arms Race) The only objective on this map is to kill the other team. You can level up to get better guns.
he Heavy Explosive Grenade Arena Restricts players to Heavy Explosive grenades.
hg Hunger Games Usually big maps with weapons scattered around the arena. Last man standing wins the round.
ka Knife Arena Restricts players to knives only.
kz Kreedz Climbing
pa Prepared Assault
jb Jailbreak
rp Roleplaying Mod only available on community servers.
surf Surf Maps Surf Maps (unofficial gamemode).
texture Secondary prefix Denotes a map that only uses dev textures.
ze Zombie Escape Zombie mod escape maps (unofficial gamemode)
zm Zombie Mod Zombie mod barricade maps (unofficial gamemode)
Note.png Note: Condition Zero uses enhanced versions of the original Counter-Strike maps denoted with a "_cz" suffix.

Day of Defeat and Day of Defeat: Source

Prefix Map Type Description
dod Default Prefix
para Para Maptype Last seen in Day of Defeat beta 3.1

Alien Swarm

Prefix Map Type Description
asi Default Prefix
jac# ? Second prefix assigned to the above, used in missions, where the octothorpe define a number, usage currently unknown.

Deathmatch Classic

Prefix Map Type Description
dmc Default Prefix This is the default prefix for all maps in Deathmatch Classic.


Prefix Map Type Description
c0 Chapter 0 Train Ride
c1 Chapter 1 Black Mesa Sectors
c2 Chapter 2 Black Mesa Trainride
c3 Chapter 3 Black Mesa Outside
c4 Chapter 4 Xen
c5 Chapter 5 Ending
t0 Training Training Maps
hldemo Demo Maps Originally found in Half-Life: Uplink

Half-Life: Blue Shift

Prefix Map Type Description
ba Default Prefix This is the default prefix for all of the game's maps.

Half-Life: Opposing Force

Prefix Map Type Description
of Default Prefix
op4cp Capture Point
op4ctf Capture The Flag

Half-Life Decay

Prefix Map Type Description
ht Default Prefix
dy Default Prefix Prefix for maps on the PC ported version.

Half-Life 2, Half-Life 2: Episode 1 and Half-Life 2: Episode 2

Prefix Map Type Description
d1 Day One Used in Half-Life 2's singleplayer campaign for Day One of the story, "Point Insertion" to "We don't go to Ravenholm".
d2 Day Two Used in Half-Life 2's singleplayer campaign for Day Two of the story, "Highway 17" to "Entanglement".
d3 Day Three Used in Half-Life 2's singleplayer campaign for Day Three of the story, "Entanglement (continued)" to "Dark Energy".
ep1 Episode 1 Used in Half-Life 2: Episode 1's singleplayer campaign maps.
ep2 Episode 2 Used in Half-Life 2: Episode 2's singleplayer campaign maps.

Half-Life 2: Deathmatch

Prefix Map Type Description
dm Deathmatch Default Prefix
js Coop

Left 4 Dead and Left 4 Dead 2

Prefix Map Type Description
l4d Co-op Storyline based gameplay
l4d_sv Survival
l4d_vs Versus
c#m# Campaign #, Mission #


Prefix Map Type Description
testchmb Test Chambers Early levels (Test chambers 1-19)
escape Facility Escape

Portal 2

Prefix Map Type Description
sp_a1 Single Player Maps (Act 1)
sp_a2 Single Player Maps (Act 2)
sp_a3 Single Player Maps (Act 3)
sp_a4 Single Player Maps (Act 4)
mp_coop Coop Maps
Note.png Note: The player will spawn with a portal gun dependent on the map prefix - for example, starting with sp_a1 will start you with a single portal gun.


Prefix Map Type Description
rc Default Prefix

Team Fortress Classic

Prefix Map Type Description
conc Concussion Using concussion grenades to do a climb/jump sort of map.

Team Fortress 2

Prefix Map Type Description
arena Arena Maps Added with the August 19, 2008 update.
cp Control Point Original Shipping Map Type
ctf Capture the Flag Original Shipping Map Type
pl Payload Added with the April 29, 2008 update.
tc Territorial Control Original Shipping Map Type
plr Payload Race Added with the May 21, 2009 update.
koth King of the Hill Added with the August 13, 2009 update.
tr Training
sd Special Delivery Added with the pyromania update
mvm Mann vs Machine Added with the MVM update
rd Robot Destruction
pd Player Destruction
pass PASS Time Used by maps utilising the PASS time gamemode.
ccp Cyclic Capture Points
db Dodgeball
dm Deathmatch
dom Domination
es Escort
jump Rocket Jumping Jump maps (rocket or sticky jumping). Fun skill maps that have little or no competitive fighting, but rather are for players to practice using Soldier or Demoman classes, using their explosive weaponry to propel themselves to difficult heights, or through difficult obstacles. (Examples include: rj_rocketeer, JUMP_HOBO)
kotf King of the Flag The intel must be held for an allotted amount of time for a successful capture. Only one flag.
melee - Melee only map
sniper - Sniper only/preferred map
toy - Players are small compared to the level scale
rc Random Capturepoints Capture Point match where the points are randomly assigned
vip Hunted map Hunted map, to be used with the Hunted mod
core Core Destruction Must destroy the primary core to win the round.
surf Surfing map Players strafe into angled surfaces, exploiting the game's physics to reach high speeds. Servers require an increased "sv_airaccelerate" value, ususally 100 or 150. Maps may be played as cp, ctf, dm, arena, or skill. (skill-surf simply being a challenging map that involves no deathmatch).
ph Prophunt Red team is turned into various props, and given an amount of time to hide around the map. Blue team must find them all before the round ends. Usually when there is one prop left alive, they are given their weapons back and Blue team is coated with Jarate. To be used with the Prophunt (Hide and Seek) mod.
vsh VS Saxton Hale VS Saxton Hale, used with the Versus Saxton Hale mod and the Freak Fortress mod.
pf Parkour Fortress Used with the Slag Gaming Parkour Fortress mod.
dr Deathrun Red team must survive a course of map-based traps activated by a player on Blue team. Used with either VSH or a similar mod.
mge My Gaming Edge One-on-one deathmatch with the "My Gaming Edge" mod
td Tower Defense
achievement Achievement Idle
fw Fort Wars
ba Jail Break
slender Slender Fortress
sb Smash Fortress
zf Zombie Fortress
szf Super Zombie Fortress
zom Zombie Mod
tf2ware Team Fortress 2 Ware
tfkart Team Fortress 2 Kart
trade Trade maps

Third-party mods

SiN Episodes: Emergence

Prefix Map Type Description
se1 Default Prefix Used by all of the singleplayer campaign maps in the game.
arena Arena Maps Arena maps are where the player has to survive for as long as possible against infinite spawning enemies.

Garry's Mod

Prefix Map Type Description
gm Default Prefix
gmdm Garry's Mod Deathmatch
mr Melon Racer
ifn Infection Unreleased test gamemode
ttt Trouble in Terrorist Town
ph Prophunt
rp Roleplay
sb Space Build
gms Stranded
zs Zombie Survival
fw Fort Wars
cinema Cinema

Vampire: The Masquerade - Bloodlines

Prefix Map Type Description
ch Chinatown Singleplayer Chinatown based maps
hw Hollywood Singleplayer Hollywood based maps
la Los Angeles Singleplayer Los Angeles based maps
sm Santa Monica Singleplayer Santa Monica based maps
sp ? Singleplayer ? based maps

Brain Bread

Prefix Map Type Description
bb Default Prefix

Dino D-Day

Prefix Map Type Description
ddd Default Prefix


Prefix Map Type Description
diprip Default Prefix


Prefix Map Type Description
dys Default Prefix
pb Phistball


Prefix Map Type Description
emp Empires Fully featured empires map. Has FPS and RTS gameplay with commander role.
con Conquest FPS only gameplay. Does not have a commander. Sometimes has vehicles.
fun Fun Fun map generally not meant to be taken seriously.

Eternal Silence

Prefix Map Type Description
es Default Prefix

Fortress Forever

Prefix Map Type Description
ff Default Prefix

Gunman Chronicles

Prefix Map Type Description
demo Gunman Chronicles demo
cinematic Cutscene
city ?
mayan ?
rust ?
west ?
rebar ?

Half-Life 2: Capture The Flag

Prefix Map Type Description
ctf Capture the Flag
dom Domination

Hidden: Source

Prefix Map Type Description
hdn Hidden
ovr Overrun


Prefix Map Type Description
ins Default Prefix

Iron Grip: The Oppression

Prefix Map Type Description
ig Default Prefix


Prefix Map Type Description
jb Default Prefix

Black Mesa Source

Prefix Map Type Description
bm Default prefix Used for all singleplayer missions
dm Deathmatch A multiplayer PvP match.

Natural Selection

Prefix Map Type Description
ns Default Prefix
co Combat

Obsidian Conflict

Prefix Map Type Description
oc Default Prefix
oc_vs PvP

Project Valkyrie

Prefix Map Type Description
3mm 3-Month Mod


Prefix Map Type Description
sf Default Prefix

The Specialists

Prefix Map Type Description
ts Default Prefix

Sven Co-op

Prefix Map Type Description
sc Default Prefix Older Sven Co-op maps tend not to have prefixes, but, to stop confusion with third-party single player levels and original Half-Life multiplayer add-ons, this prefix has come into use.


Prefix Map Type Description
syn Default Prefix

Zombie Master

Prefix Map Type Description
zm Default Prefix

Zombie Panic and Zombie Panic! Source

Prefix Map Type Description
zps Survival
zpo Objective Mode
zph Hardcore
zpa Arena

Unclassified prefixes

Prefix Map Type Description
jp ?
kz Climbing/jumping
nrp ?
proto Prototype map
rwp ?
sa Snipers Alley
sdk SourceSDK example map
test Test map
perftest Performance Test map
zoo Object Gallery


Prefix Map Type Description
killbox Killbox (DM) Map consisting of at least one box-shaped arena.