Kill Switch is best remembered for being the first third-person shooter to feature the cover system as its core game mechanic, and for introducing the blind fire mechanic to the cover system. Several shooters took inspiration from Kill Switch and implemented similar cover systems. In the design of Gears of War, lead developer Cliff Bleszinski of Epic Games credits Kill Switch's cover system as one of the influences they put into the game's design, as Kill Switch's lead designer was employed by Epic Games and was involved in the development of Gears of War.
To run Kill Switch on high graphics settings your PC will require at least a 0MB GeForce 4 MX 440 / Radeon 9000 Series 64MB with a Pentium 4 1.5GHz or Athlon XP 1800+ CPU. Make sure your GPU can run DirectX 9 or Kill Switch won’t run. In short you need a 17 year old PC for best Kill Switch performance.