Everything is Connected to Everything Else
Or EICTE as hazel puts it.
And now there’s a game about it ;)
Don’t miss the “hint” link on the top-right corner. Wikipedia and Google will help a lot.
This is basically a huge test on fast searching - there are so many categories that (almost) nobody will be familiar with all of them. The author encourages collaboration, but it is possible to advance well by just researching the main topics, and connections between known items.
Good luck ;)