Thank you for that quizz which is fun but I do not really agree with your choices. For me the most famous novel of Camus is definitly "La peste", for Sartre it is probably "Huis clos" and for Shakespeare I would have say "Romeo and Juliet". And "La comédie humaine" is not a book it's all of the novels writen by Balzac! You have to choose (you can pick La peau de chagrin). And I almost thing that is the same for the divine comedy (I would have pick the Inferno).
I agree, choices are arbitrary, I gave up after typing about 5 Shakespearean plays, same problem with Dickens and Ibsen. It didn't accept 100 years of solitude and requires definite articles (which most quizzes don't). Great idea, could be fun but the instructions/clues need tightening up a bit.
I'm glad I persisted with guessing Shakespeare's finest plays until I hit the right one. However, I do feel that The House of Bernarda Alba is very much Lorca's greatest work, rivalled only by Blood Wedding.