List of best-selling PC video games

This is a list of PC games (including Microsoft Windows, Mac OS X, and Linux) that have sold or shipped at least one million copies.

The sales figures for expansion packs are not used in calculation of the sales figure for the original game (with the exception of Guild Wars). Sales from digital distribution outlets such as Steam are also not taken into account. Subscription figures for massively multiplayer online games such as World of Warcraft or Lineage are also not taken into account.