Explain why the game ends when you get three wrong answers

[AlexanderWirtz]

Now, this just happens. As you only see the number of correct answers, it took me a while to figure out why I only got 10 questions the first time and 14 the second.

[antw]

why I only got 10 questions the first time and 14 the second.

Once you have selected a choice, you won't be shown it again after pressing "Try again?". Therefore you may receive fewer questions the second time around (due to fewer choices remaining). Perhaps it might be preferable to reuse choices you've already made if we run out of things to ask?

Now, this just happens. As you only see the number of correct answers

Scroll down past the "Enter your name" section and you should see a list of all the questions you answered, and an explanation and CO₂ value for each choice. Admittedly you do not see which specific choice you made for each question; I would not object to adding that, but I'm not sure how without cluttering up the appearance of this section (or creating confusion between the correct answer, and the visitor's choice).

[AlexanderWirtz]

Thanks @antw I saw the explanations, but a user might wonder why after three mistakes the game is over. We don't explain that anywhere.

Indeed it would be nice if we could somehow mark the questions a user got right and the ones he got wrong, or list the ones he got wrong first and then the ones he got right.