According to Starbreeze and Skybound Entertainment's announcement (via Gematsu), the title has been pushed back to allow Overkill to expand on its original vision for the game and realize the title's full potential.
"Together with Skybound Entertainment, we are fully dedicated to releasing an unforgettable experience for fans around the world and continuing to support it with high quality content in the coming years".
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The game was scheduled to come out in 2016, it was then delayed for a 2017 release.
The game, the first from Overkill since 2013 heist shooter Payday 2, will now release in the second half of 2018.
Way back in 2014, Overkill, the studio behind the PayDay series, announced that it would be making a new co-op game based on The Walking Dead.
The franchise of The Walking Dead has already seen on the shelves different gaming transpositions, some satisfactory, others much less so. Beyond that, Walking Dead creator Robert Kirkman has previously expressed his own excitement about the project.
However, despite the bad news about the game being delayed, Starbreeze will nevertheless be giving an inside look into the game's development soon.
"It's just an incredible co-operative game".