I dunno, after a while Crysis exhibited a minor form of Far Cry syndrome, where the difficulty gets ramped up very suddenly and battles become little more than bore-fests.
I really enjoyed the game up until I got about 4-5 hours into it. It's been pretty meh since then. Definitely overrated by the gaming press, whose lust for ZOMG GRAFFIX!!1 never ceases to astound me.