1. Nikola,
Greetings. The little exam is a great game, especially when playing with friends and using voicechat. Here I have a small suggestion which can hopefully be implemented to enhance the game. When choosing a difficulty, ad a custom option. When this option is activated, you would be presented with a list of categories available, where you could check or uncheck the categories you want. Normally we play on hard, however there are 2 or 3 quite weird categories which are not so necessary in my opinion. Now, the game would be even more powerful if in here you could add your own categories as well, however if you don't have enough time to develop that at this moment I would be happy with just unchecking specific categories for now.
Score: +0