What is the longest arcade game ever

That is a tough question. I would say either the old Pack man which goes on forever, or the Zombie DLC Arcade game for Call of Duty:Black OPS that literally goes on until you die. There is no end to it, you just keep killing in this old arcade style version of Black OPS until you either give up, or die. Its easier than actually playing the normal Zombie player mode, but it is still infenitly long and gets harder as you continue.