Half-Life 2 comes to Nvidia’s Shield portable game machine

Nvidia announced today that Valve has made Half-Life 2 available on its Shield portable gaming machine.

That may not sound like a system-selling announcement, but it is interesting since you can bet that Valve and Nvidia must be in conversations about doing a SteamOS version of the Shield at some point in the future. This announcement suggests that Nvidia and Valve are closely aligned.