There’s no one answer to this question, as the legality of CDKeys depends on a variety of factors. However, some people believe that CDKeys may be legitimate, as they seem to be a more reliable and affordable way to purchase games than buying them through online retailers. Some people also argue that CDKeys are not actually physical discs, but instead software files that can be played on a computer or device. This means that they do not need to be physically present in order to play games, and can be downloaded and used at any time.