Interior view of research facility in Half-Life Field Intensity mod

Decay: Singularity is a fan mod for Half-Life that transforms the Decay mode from the PS2-exclusive expansion into a fully functional single-player campaign for PC. Cooperative requirements have been removed, save functionality, difficulty selection, and the bonus mission Xen Attacks have been added.

A modified version of They Hunger based on the Xash3D engine, which includes UD models and high-quality textures, as well as many additional mod packs.

Command & Conquer Unofficial Patch — an unofficial update for the original Command & Conquer game (1995). The patch aims to improve compatibility with modern systems, fix bugs, add support for multilingual versions and high resolutions, as well as provide tools for creating custom missions and modifications.

ZMenu FlatOut 2 + Chaos Mod is a powerful trainer for FlatOut, featuring Chaos Mod, god mode, infinite nitro, free camera, wall driving, air control, teleportation, VR support, and much more.

Black Mesa: Classic is an ambitious fan project aimed at porting the Black Mesa remake (on the Source engine) back to the original GoldSrc engine from Half-Life. The mod restores the atmosphere of the original game while adding a number of improvements and maintaining low system requirements.