The War Z is now back up on Steam following its removal over accusations of false advertising.
Valve says it collaborated with developer Hammerpoint to address the game's issues and bring it back to the digital store.
"The War Z is now available for purchase on Steam. Valve and Hammerpoint Interactive collaborated to address community feedback, update the Steam store page, and make the title available for purchase worldwide," reads a statement.
"In addition, a patch has been released to update existing customers. As such, the special refund offering extended for The War Z Steam customers who previously purchased the title has concluded," it adds.
Valve removed the zombie survival game from sale on Steam following customer uproar over alleged missing features, which forced the game's producer, Sergey Titov, to apologise publicly for some of his personal actions.