Avoid fake "download now" buttons filled with malware. Reputable archival sites (like Internet Archive) or dedicated emulation forums are safest. Search for:
: Community developers sometimes build small, unofficial FPS levels using custom engines that mimic the Modern Warfare style.
To play the actual game safely, you should use the versions released for supported platforms: Available via the Steam or Battle.net stores. Consoles:
: High-end Android phones can now use Windows emulators (like Mobox or Winlator) to run the actual 2009 PC version of Modern Warfare 2 .