The best replacement for crysis 1 is crysis 2.

The best alternatives to crysis 1 are rated as following:
★★★★★  crysis 2
★★★★★  crysis 3
★★★★  crysis 3 graphics
★★★★  warhead
★★★★  2 graphics
★★★★  far cry 3
  crysis 2 graphics

Your alternative for crysis 1 is not listed? Suggest!
Speaking about crysis 1, one probably shouldn't forget about crysis 3.

Other search terms related to crysis 1 and their ratings are:
★★★★★ crysis 3
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