Incredible research and investigative journalism by the Did You Know Gaming? team. There were three distinct Metroid projects that never saw the light of day. Out of those, only one had maintained development, but in the end it eventually was transformed into what we know as Metroid Prime Federation Force. The other two were Metroid Tactics and the ever-elusive Metroid 64 – both of which may have only got to the pitch document phase.

To find out more, watch the video below: