Command & Conquer: Tiberian Dawn – Base Construction

Half-Life: Enriched is a mod that carefully updates and expands the original Half-Life campaign maps. The author improved lighting, doubled texture resolution, and reduced loading screens between levels while keeping the authentic gameplay intact.

A fan-made open-source remake of the legendary Stronghold by Firefly Studios. Built with a modern tech stack, featuring multiple localizations and much more — with original Stronghold artwork generously provided by Firefly Studios and used with their permission — all completely free!

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.

The Ironman mod builds upon many core mechanics from The Hell 2, introducing a host of improvements and refinements. Most of these enhancements are tailored specifically for multiplayer and the dedicated Ironman mode.

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.