A downloadable game
It's been a long, long trip, but you've finally arrived at the top of Mt. Combine, the largest inactive volcano in the world. As you begin your descent, however, something feels a bit off. As you keep on going down, you realize that this volcano is the farthest thing from dormant—and hiding a massive secret. Run for your life, and don't screw up: the gods are unforgiving…
"Just a Cave" is a Half-Life 2 mod which emphasizes movement and mobility. It removes combat and instead explores what makes Half-Life truly exciting: platforming. By using near-frictionless surfaces inspired by "surf" maps from Counter-Strike, combined with an unlockable "boost" mechanic, "Just a Cave" provides a thrilling and challenging platforming experience.
You must have Source SDK Base 2013 Singleplayer installed to play this mod.
Download the .zip file and extract its entire contents (including the folder titled just_a_cave) to the sourcemods directory in your Steam installation (typically, "C:\Program Files (x86)\Steam\SteamApps\sourcemods").
Run Steam (or exit and reload it), and you should see "Just a Cave" appear in your Games Library. Play and enjoy!