Crysis 2 was seen as something of a black sheep by fans of the original Crysis. I personally loved it, but others were turned off by its comparatively linear environments and plain New York backdrop. For many, the open jungle of Crysis was sorely missed.
Crysis 3 hopes to strike a compromise between the worlds of previous games, presenting a literal urban jungle. New York is overgrown with lush vegetation and fields of grass, while the remnants of concrete structures poke out amongst the green. The result is a game that looks like neither installment, yet plays a little like both.
Though maybe not quite in the ratio fans had hoped for.