Crysis, when it plays to its strengths, is absolutely one of the best FPS games out there. The trouble is that Crytek seem great at not realising what those strengths are for a good chunk of their games.
It did, and still does in may ways, look incredible as well - there is more to gaming that graphics but it is still impressive to experience those moments where a developer really goes all out to push things forward and Crysis was definitely one of those. Parts of the game still look incredible even 13 years after release.