OpenNox

A mod that randomizes almost everything in Half-Life, making each playthrough unique. Instead of the familiar crowbar, you might get a Hivehand, and a harmless headcrab could become a deadly enemy. Anything is possible - no matter how many times you return, you'll never predict what's around the corner.

Cold Ice Remastered - a remaster of the classic multiplayer mod for Half-Life featuring improved graphics, new weapons, maps, modes, and lots of features - all in a snowy atmosphere filled with humor and chaos.

Operation: Firestorm is one of the largest and most impressive mods for Generals Zero Hour. It significantly expands the game: adding 8 unique generals with their own ability trees, new units, buildings and superweapons, improving graphics, interface and sound, as well as expanding the tech tree.

Crack-Life | Remod - HD pack for the Crack-Life mod. It improves some models, textures, sounds, sprites and interface.

Half-Life: Expanded Arsenal is a mod for Half-Life that not only significantly improves the quality of textures in the game, but also adds a multitude of new weapons and NPCs, expanding the player's arsenal and enemy variety.