The best replacement for call of duty 2 is call of duty 3.

The best alternatives to call of duty 2 are rated as following:
★★★★★  call of duty 3
★★★  battlefield 2
★★  call of duty 4
★★  world at war
★  ghost recon
★  big red one
★  perfect dark zero
★  brothers in arms
  call of duty big red one
  medal of honor
  day of defeat
  call of duty

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Speaking about call of duty 2, one probably shouldn't forget about gamepad.

Other search terms related to call of duty 2 and their ratings are:
★★★★★ gamepad
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call of duty 2
call of duty 3
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