RollerCoaster Tycoon 2

Diablo: The Hell 4 is the fourth entry in the The Hell mod series – a complete overhaul of the original Diablo. It features additional fixes, new content, new features, new game modes, and new classes.

VTMB Prelude is a major story mod for Vampire: The Masquerade – Bloodlines, set before the events of the original game. The player becomes entangled in a dark conflict between hunters and vampires, exploring new locations and encountering characters who stand at the core of the Bloodlines story.

Half-Life: Invasion Definitive Edition - an improved version of the original Half-Life: Invasion mod for Half-Life, which added HD textures, updated English G-Man voice acting, improved stability and fixed bugs.

Solitary Echoes is a total conversion of Half-Life set in the Aliens universe. You play as an engineer at LV-513 base, which is under attack by xenomorphs. Having hidden in a maintenance room, the protagonist decides to venture outside after weeks to fight for his life, find help, and discover the truth about what happened.

Nuclear Winter — a story mod for Half-Life: Opposing Force, where you'll undertake new missions in a post-nuclear winter setting, facing harsh atmosphere, dangerous enemies, and a grim story unfolding after the catastrophe.