4. Call of Duty 4: Modern Warfare, Xbox 360, PS3, PC.

The clue is in the title. This is modern warfare at its very best. As Tom said in his glowing review: "Call of Duty 4 is everything we've come to love about the series and continues its tradition of stunning visuals and thrilling gameplay." Some have moaned at the short-ish single-player story, but don't let that put you off. When you're done with it the excellent online multiplayer will have you hooked for hours. CoD4, as it is affectionately known to its fans, isn't just one of the best first-person-shooters available for the Christmas and New Year holiday, it's one of the best games across all genres. Do yourself a favour and buy it.

3. BioShock, Xbox 360, PC.

What to say? Years from now gamers will look back at BioShock and say "This was a landmark moment". Not only does it look absolutely gorgeous, have an amazing story and feature some of the best voice acting ever, but it does a wonderful job of immersing you in an intense, claustrophobic underwater world. It's not an out and out blast-em-up, so if you're after no-holds barred carnage perhaps look elsewhere. But for everyone else, BioShock is not only an essential game purchase, it's an essential life purchase.