🎆 Roundup Treasure Hunt 2023; hints for 4

Firework 4
We have a game that’s fun to play,
You write what pictures have to say,
This year we held a contest, too,
To see how well you all could do! (Lucy)

25 Charon07 : I got to the solution for #4 via a link in a thread where the contest mentioned in the clue was announced. If you search in Talk for “contest,” or (as an even bigger hint) “feature contest,” one of the first topics that shows up has the link to follow.

149 AHS-Wolfy : #4 It's a game played on LT where you get points if you guess the same things as other players when describing the front page of a book.

ETA

You may have to search the site some more

Where can I find games on Library Thing