They Hunger XashXT (Unfinished Pre-Alpha)

FlatOut 2 DB Tool - a tool for reading and writing FlatOut 2 database files.

Half-Life: Extended is a large mod for Half-Life that expands the original campaign by combining content from Blue Shift and Opposing Force, adding new levels, reworking NPCs and maps, and increasing world detail. The campaign has become larger and more varied, making Half-Life: Extended feel like an almost entirely new game.

Half-Life: Absolute Zero is a Half-Life mod that aims to recreate the early ideas and plans of the original developers, as seen in the builds from late 1997 to early 1998. It brings back cut chapters, visual style, monsters, and weapons with careful polish and attention to detail.

Half-Life: Starlight is a total conversion in the horror-fantasy genre with atmospheric locations. The player is transported to the dark world of Prospera, where angels and stars obey the White Angel. You are Iris, a fallen angel without wings or memory, torn by visions and nightmares, striving to uncover the mystery of your past.

Catharsis is a short but atmospheric mod for Half-Life that tells the story of an unnamed scientist trying to escape from Black Mesa during the disaster.