Hacking is exploiting bugs and errors in a game or software (systems). NOTE! Hacking is not the same thing as cheating!! (more on that in the differents tab). If people hack in a game they probably do it because they are bad at the game or the mechanics. Hacking a software system is a whole other thing then hacking a game,  if you wanna hack a game you can just look up "name of your game hack" and you'll probably find a hack ready to download and activate. do you know those movies where they just click a few buttons and... BOOM done! Well..... that's not how it works, you have to type codes find exploits, errors and bugs in a system, sometimes you even have to get away from the pc and do stuff like planting a virus with a usb because you can't do everything remotely!