"CIO"is a side-scrolling action adventure puzzle game. In this game, a dark atmosphere suddenly envelops the campus. You play as a young student named "Z", who sets out on an adventurous journey to uncover the secrets hidden in the dark atmosphere and restore the campus to its former glory. However, the road ahead is full of dangers and difficulties. But you are not alone; many good friends will come to your aid along the way. Now, use your wit to solve the mysterious puzzles and rely on your agility to defeat the fierce enemies. Come on! Believe that you will be the ultimate winner!