Dark night combat in Batman Doom 1 Overhaul mod for Doom II

Greatest Mod is a major mod for Heroes of Might and Magic IV that significantly changes the original game. It overhauls factions, hero classes, creature and skill balance, and adds new scenarios and maps.

BREACH is a Doom mod that turns the game into an ultra-realistic tactical shooter. Forget about demons: you're in for brutal close-quarters combat in confined spaces, realistic ballistics, breaching doors with C4, blinding flashbangs, night vision devices, and advanced enemy AI.

Quake: Realm of Dissonance is a 7-map episode for Quake featuring original textures, a secret level, and support for co-op and Deathmatch. Non-linear maps, thoughtful combat, and atmospheric new effects like colored lighting and fog.

Half-Life: Ultimate Attack Remod is a rework of an older mod with bug fixes and improvements. The mod adds a Black Ops campaign, new NPCs and weapons from Opposing Force, a red HUD, and night vision.

Duke Nukem 3D: High Resolution Pack (HRP) is a graphics mod that replaces the original textures and sprites of the game with high-quality versions and 3D models. It enhances the visual side of Duke Nukem 3D and allows the game to be run in modern OpenGL ports with more detailed graphics.