Currently, I think the law is that copyright expires 75 years after the death of the author/owner. Anyway, the law changes every time Mickey Mouse is in danger of entering public domain, then the Disney lawyers swoop in and change the law to extend the duration of copyright to prevent that from happening.
In any event, the medium of video games itself isn't old enough for any copyrights to have expired, so copyright is not a defense.
In any event, the medium of video games itself isn't old enough for any copyrights to have expired, so copyright is not a defense.