Flags Block Tower

This is a new type national flags quiz game! and it’s free ! Select the national flag which is the right answer of the quiz and use it to build your original flag-tower! It’s ok even if you select the wrong one! Because you can pick up the correct national flag to use before it fall down the ground.
But more wrong answers would lead to the national flags falling faster, Please pay attention!

Wonder how many meters your tower would be ?!

Is not only country name, there is one mode that you can guess the national flag from the capital name.
Further, there are the modes use other language( initially only three languages, but will be added sequentially. Please stay tuned).

Please try to challenge!!!