On the bigness of "No Man's Sky"

For years now, scientists, journalists, and other truth-seekers have dedicated their waking hours to answering one single question: Is the video game No Man's Sky gonna be big? If so, how big will it be?

How Big Is No Man's Sky?

So big that according to Polygon:

There's a robot that lives inside No Man's Sky that nobody outside of the development team may ever see, because its entire purpose is to fly to each of the game's 18 quintillion worlds, take short videos and document its interstellar travels as a series of animated GIFs.

“No Man's Sky is so big, the developers built space probes to explore it for them | Polygon”

How in the world is this the same guys behind Joe Danger?