Chris Crawford wrote in his On Game Design about a trick like this, that he implemented in Patton Strikes Back. Plus some other tricks. He claims that he never

Chris Crawford wrote in his On Game Design about a trick like this, that he implemented in Patton Strikes Back. Plus some other tricks. He claims that he never found a cracked version that had fixed the secondary checks. The result was a crash just before winning the game. This looks like an older version of the same text that he later edited into a chapter of the book (does not have the claim about only finding failed cracks): https://www.erasmatazz.com/library/the-journal-of-computer/jcgd-volume-6/copy-protection-methods.html https://www.erasmatazz.com/library/the-journal-of-computer/j...