Left 4 Dead is a monstrously fun co-op title that has you helping your friends survive a zombie invasion while a sadistic AI god called the Director throws death at you from all angles. Welcome to the game that will make PC gaming cool again.

The Source engine still looks great, The sound design, from the zombies to the guns, serves the game beautifully, The game may seem short at first, but you'll be sucked into the varied experiences you have every time you play, Co-op is an underrated ...

20 levels? It could still use a few more, It would have been nice to have more variety in weapons. A rocket-launcher, maybe? Some melee weapons?, Servers can still be a bit glitchy, Environments could feel a little more alive, many areas in the game ...

Gears of War 2 Developer: Epic Games Publisher: Microsoft Platform: Xbox 360 Price: $59.99 (Shop.Ars) Rating: Mature

Fallout 3 Developer: Bethesda Softworks Publisher: Bethesda Softworks Platform: Xbox 360 (reviewed) PlayStation 3, PC Price: $59.99 (Shop.Ars) Rating: Mature

Guitar Hero: World Tour Developer: Neversoft Publisher: Activision Blizzard Platform: Xbox 360 (reviewed) PlayStation 3, PlayStation 2, Nintendo Wii Price: $59.99 to $189.99 (Shop.Ars) Rating: Teen

Great hardware, especially the drums, Excellent track list, You can make your own songs!, Does its own take of playing with a band, keeping the Guitar Hero feel, Cameos from famous musicians, Compatible with a wide array of guitars and drums

Career mode remains basic, Guitar duels, or boss battles, have to go, The guitar's slider bar is more gimmick than anything else, Not compatible with the ION drums, The character models can be frighteningly ugly

Fable II Developer: Lionhead Studios Publisher: Microsoft Platform: Xbox 360 Price: $59.99 (Shop.Ars) Rating: Mature

Dead Space Developer: EA Redwood Shores Publisher: EA Platform: Xbox 360 (Reviewed) PS3, PC Price: $59.99 (Shop.Ars) Rating: Mature

What happens when a group dedicated to the overthrow of modern science writes a science textbook? Ars reviews Explore Evolution, a textbook written by members of the pro-Intelligent Design Discovery Institute, which is generally convinced there's not ...

It's here, and it's a doozy. Ars reviews the rhythm game that fans are hoping is the greatest thing since Rock Band 1, and we give you the lowdown on the new instruments, tracks, and gameplay modes.

All your old songs work, You have many strong choices in instruments, Drum trainer will actually teach you how to play, Band World Tour is drastically improved, Challenges and battles mean the game never has to end, Sorting through songs is quick and ...

New guitar isn't much of an improvement, Edited songs can get annoying, It's irritating going through so much awesome stuff to find a third thing to complain about

Van Lindberg's book provides software developers with a solid introduction to the legal issues affecting their work. But it doesn't offer much guidance for developing new technologies that push the boundaries of the law.

As the online music market grows, some artists are now forging ahead without the help of a record label. Indie bands are among those who've opted to sell and market their music on their own, and they're getting successful at it, even while dealing ...