This tarball contains the Darkness 1.6 32-bit linux build, a copy of the Valve Source Dedicated Server for SDK 2013 Multiplayer and 32-bit libraries that...
Darkness: Source is a fast-paced, asymmetric team game where spiders and humans fight to destroy each other in order to survive. The first team to destroy all of the other team's players and spawns wins. Darkness is based on the Gloom Quake 2 mod.
I found a great piece of free software today called Open Broadcaster Software, and it helped me make some demo videos for Darkness. The video quality is decent and unlike the Source Engine's built-in demo recording tools, it properly shows bug-vision and the in-game menus.
So without further adieu, here's a quick video showing how the Engineer and Breeder classes can be used. For the Engineer, this clip shows basic construction, destruction, repair and destroy-gun jumping. For the Breeder, this clip shows hatching, eating, stacking/climbing, and using the invisible bug-glow to navigate dark areas:
Next, I made a video showing how the commando is used. It shows how to use grenades, prime and drop C4, and use the .357 Magnum and the silenced SMG:
Finally, I made a quick video showing some of the Stalker's attacks. This clip shows how to use spike grenades and shoulder-fired spikes to kill turrets, how to use a healer, and how to die while attempting to destroy turrets up-close: