Stronghold: Crusader

Zero Hour Reborn is a mod for C&C Generals Zero Hour that adds many new generals, dozens of new units and special abilities, overhauls old factions and abilities, introduces new types of superweapons, adds maps, and generally makes battles more large-scale and fiercer.

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.

Diablo: The Hell 2 is a hardcore mod for the original Diablo that continues the ideas of The Hell 1. Completely rebuilt from scratch, it adds new classes, spells, hundreds of items and enemies, improves balance, mechanics, and graphics, and supports modern systems and multiplayer.

Rise of the Reds (ROTR) - Falcon Rising Campaigns - an addon based on Falcon Rising Patch for the ROTR mod, which adds additional campaigns for USA, China, GLA and Russia. 31 missions in total.

Hard-Life is a mod for Half-Life focused on increasing difficulty and reworking gameplay. Enemies become more aggressive, intelligent, and deadly, while their usual placement is changed so that even experienced players must constantly stay alert.