For the better part of 44 years, Nintendo's 1981 arcade classic Donkey Kong was understood to have a single, definitive endpoint: a "kill screen" where a bug ensures that Mario will inevitably die ...

But, as it turns out, there are a handful of extra levels hidden behind the game's long-assumed unbeatable kill screen. All you've got to do is beat it. Now, this was (understandably) assumed to ...