Zombie Panic! Source
15 sourced launch options for Zombie Panic! Source on Steam ↗.
DeveloperZombie Panic! Team
PublisherZombie Panic! Team
Released2008-10-03
EngineSource
-
-autoconfigCopyAutomatically configure video settingsPCGamingWiki Added Jun 27, 2026 Last checked Sep 27, 2026 Also documented for this game on PCGamingWiki · checked Sep 27, 2026Safe -
-consoleCopyEnable the developer console (Source engine games)- Effect
- Makes the in-game developer console available, opened with the ~ key.
Debug-DevUniversal Added Jun 27, 2026 Last checked Sep 24, 2026 Also documented for this game on PCGamingWiki · checked Sep 27, 2026Experimental -
-dxlevelCopyForces the game to launch in a specific DirectX version, where xxDisplaySafe -
-hCopySet the window height in pixels- Effect
- Forces the game to start at the given vertical resolution instead of the saved or auto-detected one.
- Example
-w 1920 -h 1080
DisplayUniversal Added Jun 27, 2026 Last checked Sep 24, 2026 Also documented for this game on PCGamingWiki · checked Sep 27, 2026Safe -
-heightCopySet the window height in pixels (game-specific spelling)- Effect
- Forces the given vertical resolution. This is a per-game convention rather than an engine standard — Source uses -h, Unity uses -screen-height.
- Example
-height 1080
DisplayPCGamingWiki Added Jun 27, 2026 Last checked Sep 27, 2026 Also documented for this game on PCGamingWiki · checked Sep 27, 2026Safe -
-noborderCopyRemove the window border (Source 2007 and later)- Effect
- Requires windowed mode — pair it with -windowed or it does nothing. Gives borderless-window behaviour, so alt-tabbing avoids the two-to-three second delay exclusive fullscreen costs. Source 2007 and later only.
- Example
-windowed -noborder
DisplayValve Developer Community Added Jun 27, 2026 Last checked Sep 27, 2026 Also documented for this game on PCGamingWiki · checked Sep 27, 2026Safe -
-wCopySet the window width in pixels- Effect
- Forces the game to start at the given horizontal resolution instead of the saved or auto-detected one. Pass -h as well to set height explicitly; on its own, height is derived from the aspect ratio.
- Example
-w 1920 -h 1080
DisplayUniversal Added Jun 27, 2026 Last checked Sep 24, 2026 Also documented for this game on PCGamingWiki · checked Sep 27, 2026Safe -
-widthCopySet window widthDisplayPCGamingWiki Added Jun 27, 2026 Last checked Sep 27, 2026 Also documented for this game on PCGamingWiki · checked Sep 27, 2026Safe -
-windowCopyRun the game in a window instead of fullscreen- Effect
- Starts windowed rather than exclusive fullscreen. -window, -windowed and -sw are synonyms in Source.
DisplayValve Developer Community Added Jun 29, 2026 Last checked Sep 27, 2026 Also documented for this game on PCGamingWiki · checked Sep 27, 2026Safe -
-freqCopyForce a specific refresh rate (Source engine games)- Effect
- An alias for -refresh; the wiki lists the two as the same option. Takes a rate in Hz.
- Example
-freq 144
DisplaySafe -
-highCopyRun the game at High process priority (Source engine games)- Effect
- Raises the OS scheduling priority of the game process. It does not add CPU capacity, so it helps only where something else is competing for the processor.
PerformanceCaution -
-nojoyCopyDisable joystick support (Source engine games, except Left 4 Dead 2)- Effect
- Skips joystick initialisation, which can shorten startup. The wiki notes it does NOT apply to Left 4 Dead 2.
PerformanceSafe -
-novidCopySkip the intro video (Source engine games)- Effect
- The startup video does not play. Saves several seconds on every launch and is the most common Source launch option.
Skip-IntroSafe -
-threadsCopySet the size of the engine thread pool (Source engine games)- Effect
- Takes a thread count; the default is 3. Setting it above the number of cores available does not help.
- Example
-threads 4
PerformanceCaution -
+fps_maxCopyCap the frame rate (GoldSrc, Source and Source 2 games)- Effect
- Default 300 (400 in CS:GO and the TF2 branch). Match your refresh rate, or a little above it. Do NOT use 0 on GoldSrc — it uncaps Source and Source 2 but runs GoldSrc at 1 FPS. Above ~1000 (100 on GoldSrc) the engine develops timing bugs.
- Example
+fps_max 144
PerformanceSafe
How to apply a launch option on Steam
- Open Steam and go to your Library.
- Right-click the game and choose Properties.
- On the General tab, find the Launch Options field.
- Type or paste the option (e.g.
-windowed) into the field. To use several at once, separate them with spaces (e.g.-windowed -novid). - Close Properties. Steam saves automatically, and the option applies next time you launch the game.
To remove one, reopen the same field and delete the text. Options are game-specific; an option that helps one game may do nothing (or misbehave) in another.
Worth knowing: a launch option can break a game's rendering, reset local settings, or trip anti-cheat in multiplayer. Read the description first, add one at a time, and treat anything rated above Safe as a deliberate experiment.
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