Ninja Gaiden Sigma (PlayStation 3)

It's worth the upgrade, even if you played the originals to death, because this is one well-crafted action game for players over 17. Ninja Gaiden: Sigma is basically a well-made fighting game that emphasizes combat, with a sprawling adventure attached. While at first, players will button-mash their way to victory -- and frequent death (the game requires skill) -- learning the controls makes the combat elegant and stylistic.

The game is bloody but never feels exploitative, even though this is one of the more violent video games available. The PlayStation 3 visual upgrade makes the game feel like acrobatic lethal ballet. Fans making the upgrade will be disappointed (maybe) that new content is locked, and they'll have to invest 20 or so hours to unlock the new missions. But any adult new to the series will find a lot of stylistic and skill-based ninja violence to sink their teeth into. It's a classic remade in an elegant manner.