Games in the Dungeon crawler genre

Graphics mod for improving the Half-Life 1: Ray Traced project.

Unreal Redux is a fan-made remake of Unreal from 1998 with improved graphics, effects, and gameplay, preserving the atmosphere of the original while adding new levels, interactions, and secrets on the planet NaPali.

They Hunger - a cult horror mod for Half-Life where the player finds themselves in a rural area overrun by a zombie apocalypse. It features three episodes with a dark atmosphere, new enemies, weapons, and sound design.

Half-Life: Dark Matter is a single-player campaign for Half-Life that stays as close as possible to the series' canon. In it, you play as a Black Ops operative who gets caught up in the Black Mesa events during the resonance cascade and tries to deal with the chaos.

Half-Life: The Legacy Collection is a project to "restore" classic Half-Life releases and add-ons, bringing back a number of original effects, menus and settings in the spirit of the 1999-2001 editions.

They Hunger Models Remake! addon improves the models from the They Hunger mod, and in some cases completely remakes them for better quality and originality.

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