Big Bazar

From BoardGameGeek:

Check your reflexes! Ready? Set? Play! Be the first to spot cards of the same color and find the right answer to win them! How many legs are visible? What does it rhyme with? Who is the heaviest? Be careful as the instructions keep changing! It's a big bazaar! In Big Bazar, as soon as two cards of the same color are revealed, be the first to give the correct answer. Collect the most cards before the end of the game to win - but the rules keep changing, the game becomes complicated, and the answers are never the same!