Genius Quiz 13 is a free trivia game for Android 9.0 developed by André Birnfeld. The game consists of 50 unique questions that challenge the player's knowledge in various subjects such as history, geography, and pop culture.

One of the main features of Genius Quiz 13 is that sometimes the answers are not in the alternatives, which makes the game even more challenging. In fact, only 2% of people finish this game, which shows how difficult it can be.

Overall, Genius Quiz 13 is an entertaining and challenging trivia game for those who enjoy testing their knowledge. The questions are well-written and cover different topics, making it a great way to learn new things while having fun. However, it may not be suitable for those who get easily frustrated with difficult games.