: If you already own the game, you can often find your key in your original purchase email by searching for "Empire Earth activation". Alternatively, the key is sometimes stored in your Windows Registry under HKEY_LOCAL_MACHINE\SOFTWARE\Sierra\Empire Earth II . Community Fixes (Patch 1.5)
For those looking to play Empire Earth 2 without resorting to generators, several legitimate options exist: empire earth 2 cd key generator