If you bought a used copy from eBay or a thrift store, the previous owner likely already activated the key on EA Download Manager (now defunct) or Steam. Physical discs often work for installation, but you will fail online authentication.
A: No. The key is locked to one online account (Steam/EA). However, you can play offline on multiple PCs if you use the same account in offline mode.
If you bought a used copy from eBay or a thrift store, the previous owner likely already activated the key on EA Download Manager (now defunct) or Steam. Physical discs often work for installation, but you will fail online authentication.
A: No. The key is locked to one online account (Steam/EA). However, you can play offline on multiple PCs if you use the same account in offline mode. crysis warhead cd key