Six Days in Fallujah was an upcoming third-person shooter video game developed by Atomic Games and planned to be published by Konami for the Xbox 360, PS3 and Windows PC. Described by Atomic Games as a "survival horror game", it is the first game to focus directly on a squad of U.S. Marines from 3rd Battalion 1st Marines during six days of Operation Iraqi Freedom's Second Battle of Fallujah.

The publisher, Konami Digital Entertainment, dropped the game on April 27, 2009, after receiving criticism in the United States and Europe that the game was insensitive and in poor taste.Asahi: Under criticism, Konami ditches realistic "Fallujah" videogame (April 27, 2009)

Widely criticized by soldiers, families of soldiers and anti-war coalitions, Konami states:

"We're not trying to make social commentary. We're not pro-war. We're not trying to make people feel uncomfortable. We just want to bring a compelling entertainment experience. At the end of the day, it's just a game"— Anthony Crouts, VP of Marketing at KonamiJoystiq.com: Konami announces 'Six Days in Fallujah,'... (April 6, 2009)

Atomic Games president, Peter Tamte, later revealed that the idea from the game stemmed from the development of training tools for the United States Marine Corps. Several marines from the Third Battalion First Marines had been assigned to assist but were later deployed to Iraq and participated in the First Battle of Fallujah.

"When they came back from Fallujah, they asked us to create a videogame about their experiences there, and it seemed like the right thing to do."— Peter TamteGamePro: Six Days in Fallujah Revealed (April 8, 2009)

The project's goal is a meticulous recreation of the live Fallujah battle, with actual Marines lending their names and liknesses to the game in addition to creations of actual events of the battle. To accomplish this goal, the Atomic Games team interviewed over seventy people including returning Marines, Iraqi civilians, enemy insurgents, war historians and senior military officials.