In 12 hours everyone is allowed to choose one person to die. Will you survive?
In 12 hours every single person may choose one person to die. All deaths will be processed simultaneously one hour after that. There will be no record of or legal consequences for anyone's choices, but people will still have their own conscience to reckon with.
Death for chosen people will be instant and painless but all other physical laws and social norms apply. So, for example, if you're chosen and you're flying a plane right at the moment of the 13th hour I wouldn't want to be a passenger on that plane.
Are you gonna make it?