I remember hitting a few of these back in my youth when I was trying to "backup" game floppy disks. Some were easy to work around (eg 1.1.1 could just be replac

I remember hitting a few of these back in my youth when I was trying to "backup" game floppy disks. Some were easy to work around (eg 1.1.1 could just be replaced with NOP commands to allow further debugging), others were much more difficult to deal with (eg 2.2.2 resulted in single stepping through huge chunks of code, taking notes as I went, and rebooting/restarting the session each time I made a mistake - very time consuming). I liked encountering a form of protection I hadn't seen before, it gave me a new challenge to solve and a chance to learn something new. I came to realise I didn't even care about the games themselves, bypassing the protection WAS the game for me. As an aside, overall I noticed a positive correlation between the quality of the game and the quality of the protection (if any) it used.