Civilization IV v1.61

[kosmiq]

Originally Posted by P22

This noCD thing remind me of old days of late 80ties and early 90ties, when the main copy protection where in game quizes about something that can be only found in the manual.

Of course, early pirates dealt with this in similar way as today is done with noCD checks.

The sneaky thing that developers introduced was that some games had such check somewere in the middile of the game, and not only at start, which someone who casually played the game would not find out, and not make a workaround.

Mostly it referred to the same call in the protection. All checks throughout the game pointed to the same function and so crackers could make that function always return a valid number.