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Flag Quiz EU
![Flag Quiz EU](https://media.9game.cn/gamebase/20230805/1/17/69752f9b4e6a469da59d11577e65029e.jpg?x-oss-process=image/resize,w_100,m_lfit)
Test your knowledge of EU countries! Find out if you know them all. Notice the following rules: 1. One flag is shown at a time. 2. Choose 1 correct answer from 4 choices. There's also a mysterious code. What could it be? Psst. You can ask the developer. Enjoy the game!