The Symantec Game Pack was a group of games that came on a 5 1/4″ floppy disc. It was released in 1991. At work, about 10 of us shared a computer. I took the disk to work and loaded the games on the computer. One game, Memory Blocks, was similar to the card game concentration. You had to find two hearts, two stars, etc.
It was a Windows game but the high score table was a text file which could be edited. The high score was the fastest time you could finish the game. We edited it and put in an impossibly fast score, then showed it to a guy who really liked the game. He was irate and said we couldn’t do it that quickly. He was right.
See the link in the first sentence for screen prints.