Map prefixes and suffixes

Third-party mods

Brain Bread

• bb

D.I.P.R.I.P.

• diprip

Dystopia

• dys
• pb

Empires

• emp

Eternal Silence

• es

Fortress Forever

• ff - All gametypes

Garry's Mod

-- Official --

• gm
• gmdm - Garry's Mod Deathmatch
• mr - Melon Racer
• ifn - Infection (unreleased test gamemode)

-- Unofficial --

• rp - Roleplay
• sb - SpaceBuild
• gms - Stranded
• zs - Zombie Survival
• fw - Fort Wars

Gunman Chronicles

• demo - Gunman Chronicles demo
• cinematic - cutscene
• city
• mayan
• rust
• west
• rebar

Half-Life 2: Capture The Flag

• ctf - Capture the Flag
• dom - Domination

Hidden: Source

• hdn - Hidden
• ovr - Overrun

Insurgency

• ins

Iron Grip: The Oppression

• ig

Jailbreak

• jb

Natural Selection

• co - Combat
• ns - Natural Selection (original)

Obsidian Conflict

• oc
• oc_vs - Maps that offer PvP Gameplay

Project Valkyrie

• 3mm - 3-Month Mod

Sourceforts

• sf

Specialists, The

• ts

Sven Co-op

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, the "sc" prefix has come into use.

• sc

Synergy

• syn

Zombie Master

• zm

Zombie Panic, Zombie Panic! Source

• zps
• zpo
• zpl