Technically you don’t even own disk games as, when the key server is shut down they are looked forever, and there is no legal way to get around that.
Depends on the tech they use - back in the day CD Keys just had to pass an algorithm check - nowadays some companies have a remote call to some registration server or rely on platform auth - but the easiest to implement is that old algorithm based approach that just checks it locally.
Depends on the tech they use - back in the day CD Keys just had to pass an algorithm check - nowadays some companies have a remote call to some registration server or rely on platform auth - but the easiest to implement is that old algorithm based approach that just checks it locally.
The algorithm “encrypted” disks have master keys you can find online usually, they are however hardly encrypted.