Pretty nice. I'm reading english texts quiet often ad sometimes even watch an english clip on Youtube. But well, after this test i'm pretty sure there are many mistakes when i try to write or speak in english. So yea, enjoyed playing this. Only annoying thing: why do you make the question disappear? From the harder questions i had to make screenshots in order to be able to read them again. If it seems to easy for you if the player has both, the question and the answers together, why don't you add a "i don't know" button when you have an explanation (on some questions you've had explanations or compared two questions to each other) or a button with "what was the question".