I'm the parent of a 13 yr old who dearly wants to purchase COD 4, and so am looking for your advice. Is this game appropriate and worthwhile for this age group? Creative, or just mind-numbing violence? Are there other games he should be considering? I'm not big on shooter games in general for kids, but they are hard to avoid. Anything available that taxes the mind and not just the reflexes? You guys are the experts (and/or the converted?) so we'd appreciate your advice. By the way the games need to play on a G4 Mini 1.5 with 1GB RAM and 64Mb of VRAM, so obviously some graphic limitations there. Thanks.