PCGamesN is reporting that Valve has started a new policy that controls the number of Steam keys available to developers: the number of keys you can request as a developer will be proportional to the sales of your game on Steam.

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In a screenshot leaked to Reddit, allegedly from a private Steamworks group, Sean Jenkin, game and video development software engineer at Valve, suggests that Valve will start denying key requests to developers. While they’re keen not to “degrade tools that legitimate developers are using” to sell their games according to a blog post from May, Valve say they will now refuse to provide keys far in excess of the number of copies of their games that developers are actually selling.