How do games get cracked?

Computer games are “deciphered” by finding ways to circumvent security controls carried out by the company. This can be done by reading hexadecimal, editing hexadecimal, debugging, or using a keygen. There are 3 ways in general. They had taken a preliminary version of the game that gave the first chapter free, managed to access the other (3, I think) episodes of the game and released it as a full final instead of a Cracked Freeware or something like that.

Even giving code too soon counts when most AAA games have been previously downloaded and are ready to work once the codes are activated.