Thief 3: Deadly Shadows
HD Updates

Thief 3: Deadly Shadows, the third and last game in the first Thief trilogy. Developed by Ion Storm, the legendary company behind Deus Ex, and published by Eidos Interactive in 2004. 10 years prior to the reboot of the series. Technically Thief 3 is much better than the first two games. It uses the Unreal 2 engine instead of the Dark Engine, and the level design is much more detailed. Still, it struggles with compatibility on modern systems, but this update will make it run in any resolution and on any version of Windows. General performance & image quality will be significantly improved as well.

HD resolution fix & unofficial game patches
Screenshot Comparison
4: Game Art

1: Requirements

Thief 3: Deadly Shadows - Latest version (Steam & GOG version comes already updated)


2: HD Resolution Fix & Patches

To play the game in HD resolution with correct aspect ratio, a patch needs to be installed. This fix will make all resolutions available and fix a number of errors.

1: Download Sneaky Upgrade - Full Edition 1.1.8 (LINK)

2: Run the exe file and install.
*I recommend the following options:


After installation, click the new SneakyTweaker shortcut. I recommend leaving almost everything as it is, but make sure all content is activated.
By default, the texture pack is not selected, which doesn't make much sense. Check the page as shown in the image, and make sure everything is OK:

You might also want to change the screen refresh rate, if you run anything different from 60.

4: Apply settings & Exit.

That's it, Thief 3: Deadly Shadows is ready to launch.


3: Screenshot Comparison




4: Art




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Game Info

Thief 3: Deadly Shadows is the third first-person stealth game in the famous Thief series. It was developed by Ion Storm and released in 2004 by Eidos Interactive. The player still controls the master thief "Garrett", just as in the previous two games. Deadly Shadows also takes place in a Steampunk inspired environment with part from the medieval times and from the Victorian era. A new features that Thief 3 introduced, was the ability to explore the City. In Thief 1 & 2 the missions were linear with no "free-time" in between. Thief 3 allows the player to walk the City streets between missions and steal at random or spy on people. While roaming the City, various side-quests can be found and completed alongside the main storyline. The game is far from the open world games we know today, but it was an early open-world aspect of the game.