Uploaded January 2013 | Updated September 2026, 2 weeks ago

---

Full Valve developer playthrough: youtu.be/phTjVY04_k0
Alpha tech demo footage: youtu.be/2h7bTo5xLyQ
Alpha co-op footage: youtu.be/vJ0sxZR6iAI

Gameplay footage of some deathmatch from Half-Life Alpha v 0.52 dated September 4, 1997, over one year prior to the finished game's release. The map in this video, warez_dm, is obviously an early iteration of what would become the classic Stalkyard level. Special thanks to Barnz for helping me set up the server.