Advanced Installation Guide

  1. Ensure that you have both Source SDK 2013 Multiplayer and Team Fortress 2 installed on Steam. (Open Fortress runs through the SDK and uses TF2 assets; without installing both, you will be unable to successfully run OF).

  2. Download and install an SVN client. For this guide, we’ll be using Tortoise SVN, the client of choice for most Open Fortress players and developers. You can download it here: https://tortoisesvn.net/downloads.html
  3. Choose the right system for your OS.

    Open the installer file and follow the installation instructions.

  4. After installing Tortoise SVN, locate your sourcemods folder. It should be in the following directory:
  5. Path to sourcemods folder

    (Make sure that the sourcemods folder is on the same disk drive as your Steam.exe executable, located in your Steam folder.)

  6. Right click on an empty space in the folder and select SVN Checkout.
  7. tortoise checkout

    You will now see the following menu:

    tortoise ui
  8. Paste one of the following URLs into the URL of repository field. The URL you choose should correspond to your geographic location.


  9. In the Checkout directory field, check to see that the file path ends with \open_fortress\, like this:
  10. Checkout Path

    If not, simply add \open_fortress\ to the file path so that it matches the above screenshot.

  11. Under the Checkout depth dropdown menu, select the Fully recursive option.
  12. Checkout Depth
  13. Under the Revision section, check the HEAD revision checkbox.

  14. Click OK.
  15. Open Fortress will now start downloading:

    Checkout Final

    Once Open Fortress has finished downloading, click OK to close the TortoiseSVN checkout.


Updating and Debugging

  1. To update Open Fortress, right click on an empty space in your sourcemods/open_fortress/ folder and click SVN Update:
  2. tortoise update

    We recommend making a desktop shortcut to your open_fortress folder, so that you don’t have to navigate through your Steam folders every time you need to update the game.


    Occasionally, Tortoise SVN may run into an error when updating, often as a result of conflicts between multiple versions of the same file. In this case, right click on your sourcemods/open_fortress/ folder again, but under the TortoiseSVN tab, select Clean up:

    tortoise cleanup menu

    In the Cleanup menu, ensure that the following checkboxes are checked:

    tortoise cleanup

    Then click OK. TortoiseSVN will clear up your OF folder, and you should be able to update as normal.

Other Bugs

Open Fortress is currently in an Open Alpha testing phase, meaning that there are still many areas of the gameplay experience left to improving. If you have any issues with installing, launching or running Open Fortress that aren’t covered here, including in-game bugs, we encourage you to report them in our official Discord server.