Downloading Retro Video Games For Free
From the available limited information, the matter seems to be not of clear violation of any directive of religion since the matter has become somewhat foggy i.e. mushtabihat category , and in such circumstances no clear directive of prohibition can be given but it is advised by the Prophet (sws) to prefer attitude of restrain in such matters. But if you are satisfied at your end that there is no violation of copyrights any more considering the fact that particular outlet does not exist any more or is not generating revenue from those games anymore or has permanently discontinued that line of video games etc etc. then it would be a much easier choice to make in using those games without any fear of sin at your end. However, if the production house still considers it a voilation of their copyrights explicitly and has a very specific mode of sale of their vintage games available then one cannot opt for any other means of acquiring those games without their permission and if done so, it would be a sinful act.