Half-Life Alpha 0.52

This is an Alpha build of Half-Life from September 8, 1997. This torrent comes from a CD that was shared on Reddit in January 2013. The following description comes from the Half-Life Wiki (half-life.wikia.com/wiki/Half-Life_Alpha) :

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 (for example : map c1a1). There are 21 maps included, including the (partially finished) chapters named:

- The Portal Device (Unforeseen Consequences)
- The Office Warrens (Office Complex)
- The Security Complex ("We've Got Hostiles")
- Alien Research Lab (Questionable Ethics)
- Communications Center ("Forget About Freeman!")
- Reactor Lab (Lambda Core)

As well as 2 trailers, and some background on the technology used, among other things. Only 3 weapons are featured, and all of them have unlimited ammo (The Glock, the MP5, and the Crowbar). This suggests that most weapons weren't even scripted by this time. There is, however, a very primitive weapon drop feature.

The intent for this disc was to be a preview for media outlets, and not to be released to the general public.

It is possible to walk through the levels in co-op mode due to the nature of GoldSrc being descended of the Quake engine.

Included are 15 working .dem files (replays) recorded by a Valve employee showcasing almost all of the available singleplayer levels. The software renderer possess a number of additional working HUD elements and particle effects which don't display in the hardware accelerated renderer.