From PCGamingWiki, the wiki about fixing PC games
Prototype cover
Radical Entertainment
Release dates
Windows June 9, 2009
Prototype guide at StrategyWiki
Prototype at Wikipedia
Prototype 2009
Prototype 2 2012

Not to be confused with The Prototype.

General information

Prototype Wiki
Steam Community Discussions


Source DRM Notes Keys OS
Disc check (requires the CD/DVD in the drive to play)
SecuROM 7 DRM.
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Humble Store
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Game data[edit]

Configuration file(s) location[edit]

System Location
Linux (Proton) <Steam-folder>/steamapps/compatdata/10150/pfx/[Note 1]

Save game data location[edit]

System Location
Windows %USERPROFILE%\Documents\Prototype\
Linux (Proton) <Steam-folder>/steamapps/compatdata/10150/pfx/[Note 1]

Save game cloud syncing[edit]

System Native Notes
Steam Cloud

Video settings[edit]

Video settings.
Video settings.

Widescreen resolution[edit]

Some resolutions may not be supported. This fix makes the game run at your desktop resolution.
Replace prototypeenginef.dll[1]
  1. Backup prototypeenginef.dll in the installation folder.
  2. Download Prototype.all.Resolutions.and.higher.FOV.7z.
  3. Extract the desired prototypeenginef.dll to the installation folder and replace the original file.
Enable windowed mode temporarily to set desired resolution[2]
  1. In Steam, add windowed to the launch options.
  2. When its running, change the desired resolution in the options part of the main menu.
  3. Exit the game.
  4. In Steam, remove the windowed from the launch options.
  5. Start the game and enjoy your desired resolution.


Force windowed mode[citation needed]
  1. Download and run DxWnd.
  2. Click on Edit, then Add.
  3. Set the name and executable path.
  4. Set the window position and size.
  5. Set Desktop for borderless fullscreen windowed.
  6. Click OK, then File and Save.

Input settings[edit]

Audio settings[edit]

Audio options Native Notes
Separate volume controls
Music, SFX and dialogue.
Surround sound
Closed captions
Mute on focus lost


Language UI Audio Sub Notes
Retail only. Patch for digital release here.
Fan translation, download.

Issues unresolved[edit]

Low volume[edit]

In-game audio is very quiet except for cutscenes. There is no known solution.[3][4]

No shadows with AMD/ATI graphics cards[edit]

This game has a similar bug as with the sequel, where shadows are not rendered properly on AMD/ATI Radeon cards.[5] This can provide sub-optimal graphical fidelity for many AMD/ATI users.
So far, no known fix for Prototype or the sequel exists.

Issues fixed[edit]

Black screen on Prototype start up[edit]

Override refresh rate[citation needed]
  1. From the Start menu, Click on Run then type “dxdiag”
  2. Click on the “More Help” Tab then click the “Override Refresh Rate” Button.
  3. Set the refresh rate override value to 60.

Low frame rate[edit]

This is caused by the engine incorrectly overpolling the USB I/O in Windows.[6]
Install a mod[citation needed]

Use DirectInput FPS Fix.

Disable unused HID devices[citation needed]
  1. Open the Start screen/Start menu, type devmgmt.msc and press Enter.
  2. Select "Human Interface Devices". Disable all "HID-compliant consumer control device", you should not need to disable ANYTHING else.
It is advised to re-enable the devices after the game has closed.

Sound stuttering, crackling[edit]

Having non-default sound quality settings can cause sound problems in this and some other games.
Set sound quality to 24 bit, 48000 Hz[citation needed]

See Sound problems (cracking, delays, missing music/effects, etc.)

Missing textures[edit]

Disable all Anti-aliasing[citation needed]
  • Disable Anti-aliasing (AA) in Prototype's video options
  • Disable forced AA from the Nvidia control panel or ATI's Catalyst Control Panel.

Crashing after loading saved game[edit]

Start a new game first[citation needed]
  1. Start a new game in another save slot.
  2. Exit to main menu and load your save.

Crash after starting or loading a game[edit]

The game will not work on a CPU with more than 8 threads.
Turn off hyperthreading or turn off all but four cores[citation needed]

Enter your computer's BIOS and turn off the hyperthreading CPU feature or turn off all but four cores. The specific procedure depends on your motherboard, thus you have to consult the manual of your motherboard if you're unsure how to do this.

Resolution stuck at 1280x800 on 2GB+ VRAM GPUs[edit]

Run the game at screen refresh rate[edit]

Fullscreen mode defaults to 100 Hz, even if the screen refresh rate is set higher than that.
Set screen refresh rate[citation needed]
  1. Install Special K by following the Special K Unofficial Guide.
  2. Start the game once and close it immediately to allow the configuration file of Special K to be created.
  3. Open <path-to-game>\d3d9.ini or %USERPROFILE%\Documents\My Mods\SpecialK\Profiles\prototypef.exe\SpecialK.ini depending on the installation method you used.
  4. Change RefreshRate=-1 to RefreshRate=0 under [Render.FrameRate].

Other information[edit]


Technical specs Supported Notes
Direct3D 9
Shader Model support 3
64-bit executable


Middleware Notes
Interface Scaleform
Cutscenes Bink Video

System requirements[edit]

Operating system (OS) XP, Vista, 7
Processor (CPU) AMD Athlon 64 X2 4000+
Intel Core 2 Duo 2.6 GHz
System memory (RAM) 2 GB
Hard disk drive (HDD) 8 GB
Video card (GPU) ATI Radeon X1800
Nvidia GeForce 7800 GT
256 MB of VRAM
DirectX 9.0c compatible


  1. 1.0 1.1 File/folder structure within this directory reflects the path(s) listed for Windows and/or Steam game data (use Wine regedit to access Windows registry paths). Games with Steam Cloud support may store data in ~/.steam/steam/userdata/<user-id>/10150/ in addition to or instead of this directory. The app ID (10150) may differ in some cases. Treat backslashes as forward slashes. See the glossary page for details.