The Dark Mod is a first-person stealth video game, inspired by the Thief series by Looking Glass Studios.
The game provides the basic framework and tools (engine, assets, models, and editor) for more than 150 fan-made missions, including several multi-mission campaigns. The Dark Mod was first released in 2009 as a total conversion mod for Doom 3. Version 2.0 was released in October 2013 as a standalone game using the open-source id Tech 4 game engine.
The Dark Mod world can be viewed as an alternate, low fantasy version of our own. It is a mixture of several historical periods, with architecture ranging from medieval castles to Victorian mansions.
The Dark Mod is set in a world that is dark, gritty and adult. It is a setting that strives to be immersive, and to feel as believable to the player as possible. Neither campy humour nor climactic battles between good and evil fit the style of The Dark Mod world.
Characters talk and act in ways that are appropriate to their upbringing and station. Most guards are rough, uneducated brutes who spend their lives drinking, gambling, and bedding whores. They certainly don’t recite poetry or discuss philosophy in their spare time. Aristocrats are often just as brutish, but with a slightly more educated veneer.
With plagues, infection, and drunken brawls spilling into the streets on a regular basis, life is much cheaper in this world than ours. The heads and corpses of criminals line the roads, and public torture and hangings are one of the most popular forms of entertainment–watching criminals have their entrails cut out and burned while still alive is considered a good way to teach children moral lessons. Even the Church, the main provider of hope and beauty in this age, enthusiastically tortures and burns heretics.
This is free and open source software.
Features include:
- Customized editor for creating missions.
- Cross-platform support – runs under Linux, macOS, and Windows.
Minimum System Requirements: 2GB of RAM, 30GB of free HDD space, and at least a OpenGL 3.2 capable GPU with 512MB of VRAM.
Website: www.thedarkmod.com
Support: FAQ, Forums, Code Repository
Developer: The Dark Mod Team
License: GNU General Public License v3.0 (code), Creative Commons Attribution-NonCommercial-ShareAlike (assets)

The Dark Mod is written in C++. Learn C++ with our recommended free books and free tutorials.
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