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UPDATE 2: This is now posted on Steam's site for those seeking a refund:
Those who purchased the title via Steam and are unhappy with what they received may seek a refund by creating a ticket at our support site here: https://support.steampowered.com/newticket.php
UPDATE: According to Kotaku, The War Z has been removed from Steam although a listing for the game remains.
The War Z is under heavy fire from consumers on Valve's Steam gaming platform. According to a report on Develop-Online, players are alleging that the game has been released missing key features advertised on the Steam page and that it is in more of an 'alpha stage'. In response, Executive Producer Sergey Titov has taken to the Steam forums and altered the game's description on Steam.
“We've taken steps to correct this and format information presented on our Steam Store page in a way so it provides more clear information about game features that are present in the Foundation Release and what to expect in the coming weeks,” said Titov.
“We also want to extend our apologies to all players who misread information about game features.”
Check out the Steam forums for more.