We have also played the WCS Board Game and also the WCS Travel Card Game. My sister in law gave me this version.
It is a multiple-choice quiz. Your opponent on your right reads you the card. You are given a worst case scenario, and asked to pick the best response out of the three choices. Better than most general knowlege games, but remember, this is a US based game. Some of the terminology may be unfamiliar, and some of their answers seem a little...odd.
Part of the fun is working out why particular answers are correct, afterwoulds. Some of the answers are amusing, and some are just plain ridiculous but after turn out to be correct!
You continue to answer questions until you get one wrong, or you get 5 in a row right, in which case you win, hurrah!
In this version you get 55 cards with 108 questions. With 5 players we worked through one half of the deck pretty quickly.
My inclination is to shuffle this set in with the travel & board game cards if they match sizes.
Amusing 6/10 or finding an unopened box of chocolates only slightly after their best before date at the back of the cupboard on the Sid & Nancy scale.