ProbablyJoe writes "The long awaited Source engine remake of the Valve's original Half Life has finally been released. The initial release only includes the story up until Xen, but the developers say they'll be adding the rest of the story, along with an online multiplayer Deathmatch mode, soon. The game is available to download for free, and only requires players to install the Source SDK (included with all Source games, or a free download). The highly anticipated release has also caused a huge amount of traffic for any servers hosting the files, with GameFront, GameUpdates, and Black Mesa's own CDN brought down within minutes of the release. The project has also been approved by Steam's Greenlight program, and will hopefully be available through Steam soon, though no timeframe has been given."