Half-Life Alpha v 0.52 (9/4/97) - Tech Demo Gameplay

Gameplay footage from the tech demo levels of Half-Life Alpha v 0.52 dated September 4, 1997, over one year prior to the finished game's release. Full Valve developer playthrough:    • Half-Life Alpha v 0.52 - Full Developer Pl...   Alpha deathmatch footage:    • Half-Life Alpha v 0.52 - Deathmatch Gameplay   Alpha co-op footage:    • Half-Life Alpha v 0.52 - Co-op Gameplay Hi...   Alpha disc posted by the original owner on Reddit:   / update_finally_got_a_copy_of_that_half_lif...