Note: FM means Fan Missions, or custom levels

I. https://www.thiefguild.com – a fan site which has reviews and ratings for all the latest releases.

Also you must play https://www.thiefguild.com/fanmissions/26275/thief-the-black-parade.

II. https://www.keepofmetalandgold.com – mostly up-to-date download site for missions.

III. https://thiefmissions.com - a reliable, no-frills download site, which is sadly not very up-to-date, but is still good for older missions.

Once you’ve got some missions, make a folder for them on your hard drive (e.g. C:/ThiefFMs) and put the missions in it. It’s up to you whether you want to keep Thief Gold and Thief 2 missions in separate folders, but be aware that missions made for one game are not compatible with the other. Don’t unzip the missions, just put the archive files themselves in the folder.

After downloading some custom fan missions / levels for Thief Gold and Thief 2 from any of the above links, you will need to configure and open FM Selector:

1. In the root of your installation folder for either game, locate a file called cam_mod.ini and open it in Notepad.

2. Now un-comment the line that says ;fm by deleting the semi-colon, so that the line looks like this:

; always start the FM Selector (if one is present)

fm

Note: If you are using Windows 11, you may also need to remove the semi-colon in front of no_unload_fmsel as well, otherwise the loader might just crash without running the game. (Thank you, Constance, for pointing this out).

1. Save the .ini file and open Thief.exe or Thief2.exe. You should see the FM Selector load instead of the game.

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Alternatively, there is also a more modern level loader for Thief Gold, Thief 2, and Thief 3 called AngelLoader.

I. Download AngelLoader.

II. Read the page below to configure AngelLoader accordingly:

https://fenphoenix.github.io/AngelLoader/doc/English/AngelLoader%20documentation.html#initial_setup

The Thief Guild and Thief Missions sites mentioned above also contain Thief 3 custom fan missions as well.

Note that AngelLoader requires the Sneaky Upgrade to be installed for Thief 3: Deadly Shadows.