The Walking Dead

The Walking Dead is a series of comic books, television shows, and video games; as a true multimedia project, each element tells its own story within the same universe.

Summary
The Walking Dead was first created in a comic book series of the same name by Robert Kirkman, Tony Moore, and Charlie Adlard. After the comic book became a runaway success, a television show was created on AMC, developed by Frank Darabont. The show, starring Andrew Lincoln as Rick Grimes, depicts the sherriff awakening from a coma in a post-apocalyptic world dominated by flesh-eating zombies known as "walkers", continuing with his search for his family and other survivors.

Following the success of the show, which broke many viewership records (including the distinct record of the fourth season debut being the most watched drama of all time), a video game was created by Telltale Games. This title covered the genesis of the Walking Dead, and depicted a struggling convict by the name of Lee Everett and his companion, a little girl whom he rescued called Clementine. The game was extremely successful, launching the series to higher provenance.

Relation Between Games
As far as we know, there is no relation between the Telltale Games version of The Walking Dead and the newly announced Overkill's The Walking Dead outside of the general universe. This is in keeping with other titles within the universe, as each Walking Dead project features brand new characters in the general universe. Few details have been announced concerning the title, however, so cameos or references may crop up during development.