Dark industrial corridor with alien enemies in Half-Life Field Intensity mod

Extended Half-Life High Definition Pack — a large HD pack of models and textures for Half-Life, including original files from the Gearbox High Definition Pack, as well as refined and new models and sprites from PS2, Dreamcast ports and community works. Improves the visual aspect of the game: more detailed characters, weapons, NPCs and environments.

IronTusks - Diablo 3D is a hybrid of Heretic and Diablo on the GZDoom engine, allowing you to play through Diablo in FPS format. A town, huge dungeons, leveling, skills, a merchant, loot, alchemy, and the ability to acquire your own slave. The atmosphere, sound, and design are inspired by Diablo 1 and 2.

Open-source reverse engineering of the Diablo 1 engine, allowing the original game to run on modern platforms with improvements and fixes.

Bloodlines: Antitribu is a mod for Vampire: The Masquerade – Bloodlines that makes the game darker and deeper. It adds new clans, disciplines, locations, and quests, changes the balance and combat system. The mod completely reimagines the original while preserving the atmosphere of the vampire world and enhancing the sense of danger and survival.

Diablo 2 - Durance of Hate is an incredible fan-made demo project in Unreal Engine 5, created by a Polish 3D artist, showcasing the Durance of Hate level where Mephisto from Diablo 2 resides.