Sid Meier's Civilization

Half-Life: Recovery is a fan-made sequel to Half-Life: Decay. The main protagonist is Colette Green (Gina Cross's partner), and she, together with Dr. Keller, needs to obtain a portable teleportation device to escape Black Mesa — their survival depends on it.

A 2D RTS in the style of the Command and Conquer series, specifically inspired by Command and Conquer: Generals. You can construct buildings, produce units, and destroy enemy bases.

USS Darkstar (Steam Fix) is a fixed version of the original mod where the contents of the .pak file have been extracted for proper compatibility with the Steam version of Half-Life.

Absolute Redemption is a story mod for Half-Life that continues Gordon Freeman's story after the events of the original. You'll encounter new missions with diverse scenarios and unexpected plot twists.

Stronghold 2 Crusader is a mod that brings Stronghold 2 to the Middle East during the Crusades. Numerous new textures, sounds, and graphics create an impressive atmosphere of the desert and crusaders, and the mod also adds a new Crusader campaign.