Half-Life Alpha

Half-Life Alpha 0.52 is a leaked version of Half-Life from September 8, 1997, before the redesign of the game by Valve. The disc was shared on Reddit in January 2013. The disc was also for sale on eBay, and was purchased for $709 USD. The game plays on a modified Quake engine, with several unfinished scripts such as the HUD. Due to its unfinished state, maps can be only accessed by console (ex.map c1a1). There are 21 maps included, including the (partially finished) chapters named: The Portal Devi