"War Games" is a 2004-2005 major storyline comic book story arc published by DC Comics that ran in its Batman family of titles, Detective Comics, Legends of the Dark Knight, Nightwing, Batman: Gotham Knights, Robin, Batgirl, Catwoman, Batman, and Gotham Central. The storyline, which was published from October 2004 until January 2005, was preceded by a prologue that appeared in Batman: The 12 Cent Adventure.

Batman: Legends of the Dark Knight, often simply called Legends of the Dark Knight, is the name of several DC comic books featuring Batman. The original series launched in 1989 as the third major monthly Batman title, following the popularity of Tim Burton's 1989 film Batman. Many of the stories follow the tone of Frank Miller's Batman: Year One. The series differed from other Batman titles of the time. The creative team rotated with every story arc and the stories stood alone, unlike the inter-connected nature of other Batman comics. Initially the title ran stories contained to five issues, often with more mature topics and sensibilities than the other Batman titles. After issue #20, the number of issues for each story began to vary and occasionally tied into crossover events.