Half-Life Edge of Darkness mod with tactical crate room combat

Half-Life - Full Audio Remaster is a modification for Sven Co-op and the Xash3D engine, created to precisely remaster all low-quality sound effects and dialogues from Half-Life, Blue Shift, and Opposing Force. Monster, machinery, scientist, weapon, and even footstep sounds have been manually cleaned and restored to full 24/44.1 kHz quality.

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.