Black Mesa: Classic

Half-Life: Recovery is a fan-made sequel to Half-Life: Decay. The main protagonist is Colette Green (Gina Cross's partner), and she, together with Dr. Keller, needs to obtain a portable teleportation device to escape Black Mesa — their survival depends on it.

Total Destruction is one of the oldest mods for Red Alert 2 (started in 2002). Adds more starting money, hundreds of units and buildings, expanded settings, more units at the start of the game, and disables building destruction for 30 seconds.

Single Race Options for Selo's Car Pack — an addon for the Selo's Car Pack mod with extended single race settings: number of laps, damage and visual damage levels, car upgrades, toggling nitro and ragdoll physics, as well as bot customization.

C&C: Reloaded is a mod for Yuri's Revenge that allows you to experience the classic strategy in a new way by combining elements of Tiberian Sun and Red Alert 2 into a single game. It includes the original campaigns, a new storyline for Yuri with 13 missions, reworked balance, additional units and technologies, as well as multiplayer support.

Half-Life: Dark Matter is a single-player campaign for Half-Life that stays as close as possible to the series' canon. In it, you play as a Black Ops operative who gets caught up in the Black Mesa events during the resonance cascade and tries to deal with the chaos.