【實用遊戲app】Longer|最夯免費app-綠色工廠好玩App

This app contains 100 puzzles. It asks the operator to determine which river is longer.The app lists 2 options in each puzzle. In total the app investigates 200 rivers.The app lists the correct information about the two rivers after the operator chooses his/her answer.Music is played in the background to add enjoyment.