Sid Meier's Civilization IV

C&C: Shockwave Chaos is a mod created based on C&C: Shockwave for Generals: Zero Hour. The authors set themselves a strange but amusing goal—to make the game so unbalanced that it becomes balanced again. The result was a true extravaganza of chaos, where common sense gives way to humor, memes, and outright madness.

Disciples 2: Alternative Mod is a major modification with new factional and neutral units, items, music, and revamped combat mechanics (attack zones, new attack types) and story campaigns.

Diablo: The Hell is one of the most extensive mods for the original Diablo, aimed at hardcore players. It significantly expands the game: adds hundreds of new items, monsters, spells, and quests, fixes bugs, restores cut content, adapts to modern systems, and preserves the classic atmosphere.

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.

Solace Dreams - a total conversion for GZDoom, inspired by Silent Hill and Dark Souls. You play as a schoolgirl named Yuna, who enters the nightmares of her classmates: from medieval castles to neon clubs. Leveling, currency, shop, summoning defeated bosses, and high replayability.