If you haven't played Crysis then I highly suggest you do so. At the time it may have blown up most computers out there, but if your machine can't run it now then you have bigger problems.
You could also play it on either the Xbox 360 or Playstation 3, eliminating the risk of explosions.
Either way, you can get it for free by simply preordering Crysis 3 on any platform you want. You will then get a code to download Crysis and the system that you preordered for.