
Half Sword is a physics-based medieval combat simulator featuring historically accurate XV-century arms and armor. Brutal nature of medieval combat with in-depth blood and gore features.
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Half Sword is a physics-based medieval combat simulator featuring historically accurate XV-century arms and armor. Brutal nature of medieval combat with in-depth blood and gore features.
(more…)
Operation Black Mesa is a total remake of Half-Life: Opposing Force. Utilizing the Source engine, Tripmine Studios plans to recreate the Black Mesa Research Facility from the ground up, as seen by the protagonist, Adrian Shephard.
This game is completely FREE and requires only installation of the Source Sdk Base 2013 (Multiplayer and/or Singleplayer) which is available for free through Steam!

Cry of Fear does not require Half-Life to be installed. It’s completely stand alone as a full game, and it’s completely free!
Cry of Fear is a psychological single-player and co-op horror game set in a deserted town filled with horrific creatures and nightmarish delusions. You play as a young man desperately searching for answers in the cold Scandinavian night, finding his way through the city as he slowly descends into madness.

Received and re-post.
Do you remember the pilot of the fan movie Enter the Freeman? The people behind that project are trying to raise the money via Indiegogo to make a Half-life series..
So for more informations and-or if you want to support them head here: Half-life Movie Indiegogo

Exterminatus (EX) is a team based, Warhammer 40,000 themed, total conversion for Half-life 2. EX is being developed by the team that brought you Rival Species for Half-life. Two teams/species featured in the first version of EX are the Imperium of Man (represented by tactical marines of Ultramarines chapter of the Adeptus Astartes) and Tyranid Hive Mind (represented by creatures of Hive Fleet Behemoth).
Each map plays through a series of objectives, capturing the final objective delivers victory to your team. Players that do well in combat or by capturing objectives are rewarded with the option to play better classes. Each team has five playable classes, each with their own weapons and play style.

CSS SCI FI 3: Hardwired is a single-player modification for Source. 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.
Players enter each map through the mission hub and can choose to play each one at a time or all in 3 linked campaigns. Each mission features a series of goals, such as to rescue hostages or destroy targets, which must be completed to move on to the next map or return to the hub. There are multiple approaches to each goal, and in each map the behaviour and armament of enemies and the distribution of resources are randomly determined within defined parameters. Thus, no two plays are the same, making CSS SCI FI a truly replayable single-player experience.
Key features at a glance:
* Single-player.
* Requires only Counter-Strike:Source.
* Includes a custom mission hub, weapon test range and full configuration utility.
* Features 42 replayable non-linear missions, each with multiple goals and hidden secret weapons.