Proudest is probably my first and not particularly clever, but I am very fond of it. Early 90s, a friend let me borrow a copy of a game he had, which included

Proudest is probably my first and not particularly clever, but I am very fond of it. Early 90s, a friend let me borrow a copy of a game he had, which included a physical codewheel you use to prove that you own the shareware. I thought about copying the codewheel so I could return the floppy to him and still play, but I'd read that computers have no way to make random numbers and usually seed the random number generator with the current time. I made a batch file that set the time to a specific value and then launched the game, and memorized the code I'd get if I sped through the main menu as fast as possible.