CSS SCI FI 3: Hardwired is a single-player modification for Half-Life 2. Waking up to find himself an augmented clone of Gordon Freeman, the player must fight time-travelling Combine forces and other enemies across 42 unique and replayable missions.

Missions are set in 18 retail and 24 custom Counter-Strike: Source maps, which are installed intact to the player’s CS:S game folder. The mod edits the entity data for each map as it is loaded, adding and modifying entities to create a seamless single-player experience. The maps remain unchanged and are fully playable in Counter-Strike: Source. Maps have been contributed by established designers, including Bluestrike, Schuzak and d00ds.com. Combat locations range from a snow-covered country church to a dense pine forest to a sun-baked tropical island.