News for hackers. Stuff that matters.
Re:Deep dive into how DOS games do copy protection by making... by 2mlWQbCK on Monday April 28, 2025 @09:18AM (#43821233)
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/j...

Re:Deep dive into how DOS games do copy protection by making... by PaulHoule on Monday April 28, 2025 @09:35AM (#43821394)
Apple ][ games like Ultima were famous for crashing 20 hours in if you didn't crack the hidden checks.