I'd say Crysis is more than that.
I really don't like FPS games. The few exceptions are the more realistic ones, such as OFP/Arma and Vietcong. But I love Crysis, enough to have played through it 5 or 6 times and I'm still not tired of it. That suit gives a lot of freedom in playstyle (go stealth or rambo, whatever you prefer, it works), and the island is spacious enough to let you approach every situation from multiple angles (opening up more tactical gameplay).
Simply put: nanosuit = WIN
But a RPG should give you a bit more replay value; maybe have a look at Dragon Age or Fallout 3 as well.