I suggest you read this page about the Dungeon Master ('87) copy protection which includes an interview with its main programmer and author of its (ingenious) c

I suggest you read this page about the Dungeon Master ('87) copy protection which includes an interview with its main programmer and author of its (ingenious) copy protection. http://dmweb.free.fr/community/documentation/copy-protection/copy-protection/ http://dmweb.free.fr/community/documentation/copy-protection... Nearly 40 years later, I still wouldn't call it "wasted time".