CNN astutely notes that the game appears to use the engine and many graphics from id Software's 1993 landmark title Doom. It may be a simple coincidence or a matter of the availability of the game platform (or that the game designers in question are writing on 1990's-vintage PCs). But on the other hand, the storyline of the original title and the sequels that followed -- that of a lone fighter taking on the minions of Hell, partly to save humanity, and partly to avenge his fallen comrades -- significantly parallels the jihadist mindset, especially among lone attackers like Mohammed Taheri-azar and Naveed Haq.
In any event, the game is another example -- like pro-jihad rappers -- of attempts to graft jihadist ideology onto pop culture, and by associating itself with something "cool," turning the medium at hand into a vehicle for indoctrination and incitement.
From the SITE Institute (images available at their page): "'Night of Bush Capturing' A Computer Shooting Game from the Global Islamic Media Front"
A first-person perspective computer game called "Night of Bush Capturing," was released to jihadist forums today, Friday, September 15, 2006, by the Global Islamic Media Front, a jihadist mouthpiece, and visual and print media organization. The game, which is a modification of an older game, "Quest for Saddam," features six-levels, culminating in a gun battle with a character representing U.S. President George W. Bush. Each of these stages, given titles such as: "Jihad beginning," "American’s Hell," "Searching for Bush," and "Bush hunted like a rat," contain a Mujahid with several weapons traveling around a U.S. forces’ camp, which is covered with pictures of Bush, British Prime Minister Tony Blair, Grand Ayatollah Ali al-Sistani, and the leader of Hezbollah, Hassan Nasrallah. War nasheeds, jihadist songs, play in the background of each level. Upon completion of the game, "Takbir Allahu Akbar" is shouted.
The Global Islamic Media Front announced recently the game with a video trailer and images of in-game action. According to the advertisement, the game was distributed for "terrorist children".