Explore indoor scientific facility interiors in Half-Life Expanded Arsenal mod

Black Ops is a single-player mod for Half-Life where you play as an agent of the elite Black Operations unit. Your mission is to eliminate the rogue scientist, the elusive Gallagher, and then return to Black Mesa with a bomb. The mod stands out with its vivid stylization — graphic comics instead of cutscenes, as well as atmospheric urban locations.

A fan-made port of the early alpha version of Half-Life to the classic GoldSrc engine, featuring updated maps and content.

Rotr:Empire of the Pacific Alliance submod Path is a submod for Rise of the Reds that adds a new Asia-Pacific Alliance faction, unique units, effects, and experimental mechanics.

A mod for Stronghold where all unit voice lines are replaced with juicy Russian profanity. Yes, farmers, crossbowmen, monks, and everyone else now swear as if they’re not in the High Middle Ages, but in a slice-of-life chronicle of modern Russia.

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.