Dark, bloodstained sci-fi corridor with computer consoles in Half-Life USS Darkstar patch

Azure Sheep: Enlightened - a remaster of the original Azure Sheep mod with numerous changes affecting textures, HUD, weapon mechanics, levels, NPCs and much more.

Delta Particles is a mod for Half-Life that represents a complete overhaul of the original. You play as Nick Farrell, a technical engineer at the Delta Base complex, which competes with Black Mesa. You find yourself at the epicenter of a catastrophe caused by two different experiments conducted simultaneously at both complexes.

Zombie Panic! is a multiplayer mod for Half-Life where you and your friends are survivors, and one of you becomes a zombie. Every time a survivor gets killed, they resurrect as a zombie and join the hunt for the rest. Ammunition is limited, so you can't just spray bullets everywhere - you have to conserve and work as a team.

FlatOut 2 In-Game DB Editor - a plugin that allows you to modify the game database in FlatOut 2 in real time.

Opposing Force: Enlightened - a mod for Half-Life: Opposing Force that adds a lot of new weapons, improves lighting, effects, and atmosphere of the original campaign, making it visually more modern without changing the storyline.