Pewdiepie reviewed this sometime not too long ago and said the steps to an apology “I’ve made a severe and continuous lapse of my judgment and I don’t expect to be forgiven I’m simply here to apologize”
To be judged by 12 is to go to court and to be judged by a 12 man jury, which all court trials have.
To be carried by 6 is to be dead. It is common for 6 people to carry a coffin (3 on each side) to and from the hearse.
In total the phrase "I'd rather be judged by 12, than carried by 6" means that the person would rather kill someone and go to prison than to, themself, be killed and have to be buried.
n. software that is no longer sold or supported by the original publisher / developer, often found as free downloads on the internet because it cannot be obtained elsewhere. Not legal, but often seen as morally acceptable because the company that made it is no longer selling the title, nor releasing it as freeware, therefore abandonware is "keeping the gamealive", so to speak.
Doom II is not abandonware because idstill sells it, while The Incredible Machine is not sold, therefore is abandonware.