I loved playing FarCry. It had me stopping and just gawking at the amazing realism of the outdoor levels. Yes the AI is super tuff eh ?
Tip: Use the binoculars - lots, I mean all the time. They'll show enemies on your radar from a loong distance. Target the baddies with your binoculars on full zoom, keyboard switch to the M4 (don't move the mouse !), fire a short burst, back to the binoculars & repeat. You can take out enemies this way from beyond the M4's effective range & they have no idea of your location
I can't wait for more CryEngine games, I also reckon it's light years beyond other PC game engines.
Have fun !