Fifteen years in the making, the anticipated Source mod to Full Game Release Black Mesa is finally out with all chapters from the original Half Life being playable from start to finish. Initially created by fans to be a better, version of Half Life:Source, the project overwent through many phases over the years with the mod version being released in 2012 although the Xen chapters werent available then. Now, with Valves blessing the fans have released the game on Steam under The Crowbar Collective to finally finish the dream of remaking the original Half Life in the Source Engine.
Source: N4G PC Selectstarters Game Review: Black Mesa