List of Command Line Parameters

This is a list of user level Command Line Parameters that players have access to use while launching City of Heroes/Villains, in alphabetical order. In cases where the command line parameter can also be used as a slash command, the launch parameters will link to the slash command page.

Working Command Line Parameters        ★ = Using slash Command page

-assetpath options	Points the game client to the piggs folders, in load order.
-auth	Auth server IP string.
-compatiblecursors ★	Enables useage of basic windows mouse cursors instead of graphical cursors (command line option).
-console	Turns on debug console (where printfs go).
-CoV	Sets your login theme to city of villains with launch parameters.
-demoplay	Start playing the specified demo file.
-enablevbos ★	Turns on vertex buffer object extension
-exitlaunch ★	Set program to run when game exits.
-fullRelight ★	Do not cap number of relit vertices per frame.
-fullscreen ★	Sets video mode to fullscreen.
-gfxreset	Resets all graphics settings and launches the game in windowed mode.
-launcher	Tells the game that the client was started with the NCsoft Launcher instead of the CohUpdater.
-launchedfromsteam	Tells the game that the client was started with the Valve Steam launcher. If so, the Steam SDK is initialized.
-legacylayout	Enables existing installs of the game client to find certain files when you aren't launching the game with Tequila, Island Rum, or the Homecoming launcher.
-lodbias ★	Multiplier for LOD (Loss of Detail) distances for entities (alters the Character Detail setting in Options).
-maxfps ★	Sets the maximum limit for frames per second that a player's client can utilize, whether the game is in focus or not.
-maxInactiveFps ★	Limits max frames per second while the game is not in the foreground.
-maxtexunits ★	Limits number of textures used, set to 4 to emulate GF 4/5 path
-mtu	Sets the mtu size for client-generated packets (command line option).
-no_nv_clip	Disable using nvidia specific vertex profiles for user clipping. (use on command line).
-noATI	Disables use of R200 shader path, uses only ARB shaders instead. Active. Any effect?
-nodebug	Turns off error printing. Any effect?
-noNV	Disables use of NV1X/NV2X shader path, uses only ARB shaders instead. Any effect?
-nooverride	Disallows override files. Any effect?
-noPBuffers	Disables PBuffers. Active. Any effect?
-noperforce	// disable perforce usage for life of the app. To be used when perforce not available. Perforce - the FAST SCM System. Perforce, the Fast Software Configuration Management (SCM) System. Perforce tracks and manages source code, document, and digital asset development for software production environments.
-nopixshaders	Turns off pixel shaders.
-nopopup ★	Enable or disable popup error dialogs.
-norenderthread	Tell the client not to use a separate thread for rendering graphics.
-noRTT	Disables RTT PBuffers.
-noStencilShadows	Command line option to disable stencil shadows. //Startup flag to disable stencil shadows
-noverify	Skip verify.
-noversioncheck	Allow connecting to wrong version of mapserver.
-NV1X	Forces NV1X rendering path. GPU-acceleration of a style of 2D graphics known as path rendering all CUDA-capable NVIDIA GPUs
-NV2X	Forces NV2X rendering path.
-pbuftest	Thrash PBuffers.
-port	A network port is a 16-bit number that identifies one side of a network connection between two computers. Computers use port numbers to determine to which process or application a message should be delivered. 2106 6994 13094 23094 TCP 2104 TCP 2106 TCP 443 UDP 7000-7200
-priorityBoost ★	Set the game process priority to Above Normal rather than Normal when running in the foreground.
-profile_spikes	Save profiles of any frame longer than the specified time in ms.
-profile	Save a profile of the current frame for up to the specified number of frames.
-profiling_memory ★	Set the number of mb of memory to use for profiling.
-project	Set project registry key (coh / cohtest / cohbeta).
-reduce_mip ★	Reduces the resolution of textures to only use the reduced (mip-map) textures. must pass as command line arg -reducemip or you need to subsequently run unloadgfx.
-renderthread	Tell the client to use a separate thread for rendering graphics.
-screen ★	Sets x and y screen dimensions.
-stopinactivedisplay ★	Stops rendering when the game is not the foreground application.
-texwordeditor	Edit the text layout for translatable textures.
-uiskin	Sets your preferred login theme.
-useARBassembly	Forces use of arb assembly shader path.
-usecelshader ★	Enables or disables the cel shader graphics setting.
-useCg	Use cg shaders instead of arb.
-usefp	Use a floating point render target for hdr lighting effects if available.
-usePBuffers	Force use of PBuffers even if on a suspected unsupported video card. In OpenGL, a pbuffer is an off-screen render target that acts like the default framebuffer.
-useTexEnvCombine	Forces use of texture_env_combine shader path.
-vis_scale ★	Controls draw distance for World Detail (1.0=default).

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Unknown or Non-functional Command Line Parameters ^†

-safemode number	Forces most compatible graphics and audio settings. (non-functional)
-dxt5nm_normal_maps	1 = use dxt5nm cvompressed normal maps, 0 = use dxt5 normal maps (old mode).
-forcecrashcheck	Disabled. Used to be part of the verify files routine after the game client crashed.
-ignorebaddrivers	Issue 25: The -ignoreBadDrivers command line parameter will hide the popup and warnings about your drivers being out of date. You will still get a warning if the driver is in a (very small) list of drivers that are known to cause problems.
-lwc	Crashes the game client. LWC = Light Weight Client
-noARBfp	Disables use of arbfp shader path, uses vendor-specific fragment shaders instead. Crashes game Client.
-novbos	Turns off vertex buffer object extension.
-patchdir	Command removed by Homecoming in Issue 26 Page 5.
-patchversion	Command removed by Homecoming in Issue 26 Page 5.
-R200	Forces r200rendering path. (crashes game client)
-setlocale	Command line argument to change the locale of the game client. (Non-functional for players).
-setregion	Set the region for the game client. 2 regions: EU and NA. Default value is empty or N/A, meaning the "world" region. (non-functional for players)
-testgameprogress	Test the progress of the game. (Non-functional for players)
-verify	Appears to have been disabled in game client, however the launcher has taken over this function. // This function is needed if we launch from NcLauncher because Launcher does // not validate the installation before running. COHUpdater does a validate so // we don't do another here in that case. // enable this block if only want to verify when -verify passed on command line

† It's possible that many of these command line parameters work, but how to get them to work is currently unknown. Maybe you'd have better luck in figuring some of these out? We could use your help...