My favorite was a way (this was a long time ago back in 1984) to use TWO of what they called "floppy disks" (instead of just ONE floppy) to save my in-game progress from time to time in a game (I can hardly remember the name of the game) that a whole lotta players were playing at the time called WIZARDRY (for the Apple II plus). Doing this switching back and forth enabled warping around the whole virtual world like instantly instead of having to walk VERY slowly, fighting critters the whole way. I was the player who invented this process. But almost certainly a bazillion other players probably discovered this trick simultaneously because it wasn't all that difficult. I then set up an actual company, legally created under the laws of the state that I was from, which used the nation-wide, mostly underground by word of mouth, publicity that was generated from this "accomplishment" to offer maps for sale to everyone for $3 each (postpaid) of Wizardry's virtual world which I had unraveled from actually playing the game. I had written my whole progress in the game all slowly down by hand on about 10 pieces of paper. The maps really were just xeroxed copies of my own painfully recorded and very slow progress in the game. Anyways, that was the beginning of my first business, which I successfully ran for 10 and a half years. The whole time I always exploited game architecture weaknesses to generate "tricks" that everyone wanted to know about and then I used this to try to sell them xeroxed copies of maps and other stuff that I created to all of these virtual worlds, all coming from my having to actually play and beat each game. And, believe it or not, when I released my first Wizardry map series for sale, I was actually still a Sergeant serving in the US Army about to finish up my enlistment and become a civilian again. The name of my company was..... (nope, better not tell you alls, I might get sued or something by Sir-Tech or some of the other actual game manufacturers, haha). Anyways, 18 games later (and 10 and a half years) the Apple II computer was (almost) dead, killed by someone they called IBM, and I had to stop "production" and I then fired all of my employees. Which means that I fired myself because it was a one person operation! Now I am about 60 years old and I have sort of spent almost my whole life immersed in these crazy video games. But please remember you alls, "old is not dead yet!"