Yet again, we're ending another week, so it's time to go through the top full-length features of the past week on big sister 'art and business of gaming' site Gamasutra, plus some bonus news interviews from the site.

Some of the best long-form pieces showcased here include interviews with the Valve writers, Zynga, and a Call Of Duty: Modern Warfare 2 art lead, plus 'Games Demystified' taking on rail-sliding in the new Final Fantasy game, minimizing risks in large game productions, and much more.

Here's the top stories of the week:

On Bringing Modern Warfare 2 To Life
"Gamasutra sits down with Joel Emslie, Call Of Duty: Modern Warfare 2's lead character artist, to discuss the processes by which the most respected name in war games gets its considerable visual punch."

Games Demystified: Dissidia Final Fantasy
"In each Games Demystified column, developer Jeremy Alessi unpacks the technique behind a game's signature gameplay -- complete with a demo -- and this time, he's be covering the Tony Hawk-esque rail grinding of Dissidia: Final Fantasy."

Building Social Success: Zynga's Perspective
"Zynga's business development VP Hugh de Loayza talks in detail to Gamasutra about not just what makes social games successful, but why developers like Brian Reynolds, who left Big Huge Games for Zynga, are attracted to the social games space -- besides the potential profits."

Small Developers: Minimizing Risks in Large Productions - Part I
"Experienced game developer and manager Troy Dunniway, a veteran of studios like Microsoft, EA, Insomniac, and Ubisoft, discusses some of the major risks involved in transitioning from a small to large development team and how to identify and avoid them."

Valve's Writers And The Creative Process
"In a rare interview, Valve writing linchpins Marc Laidlaw and Eric Wolpaw talk in-depth on the narrative structure and pithy quips behind critically feted games like Half-Life 2, Portal, and Left 4 Dead 2."

Q&A: CCP On Keeping EVE Online Fresh And Growing
"CCP's Ryan Dancey talks to Gamasutra about what sets intense MMO EVE Online apart from its competition, and the decisions the developers are making to continue to drive the game's growth."

Interview: Making Wii Work: The Way Of Need for Speed Nitro
"As the Wii-specific Need for Speed Nitro launches, EA Montreal's Nintendo specialist Joe Booth tells Gamasutra about the psychology and tastes of the Wii gamer, and how creating a "social kind of play pattern" for the game was key."