NVIDIA's SHIELD device exclusive collection continues to grow. Here with the Half-Life 2 Episode One, they bring on another one of Valve's classic presentations in solid gaming history. Half-Life 2 and Portal have already been released - now we've just to wait for Portal 2 and the eventual sequel to Half-Life 2 Episode One and we're all set! This game requires that you use a physical controller - like the NVIDIA SHIELD Wireless Controller, for example - and presents essentially the same experience you'd roll with on a PC. Welcome back to City 17, complete with HALF-LIFE 3 CONFIRMED in full effect.