Below are answers to
frequently asked questions about the corresponding page
List of best-selling PC games. They address concerns, questions, and misconceptions which have repeatedly arisen on the talk page. Please feel free to change this material in light of new discussion.
Q: Why are there so few sales figures from the popular service
Steam?
A: Sales figures for this service are rarely released because developers are forbidden from doing so due to signing a
non-disclosure agreement.[1][2][3] The few that have been released have been added. Guesstimates are not added, as the list is based on
reliable figures released by developers/publishers.