Download the .APK file.
Copy it to your Android device.
Install the apk and start the app.
Print the QR Codes and cut them out.
Put the "World" QR Code approximately 1m in front of you on a table, a desk or on the ground and scan it whith the app.
A Ghost will approach and ask for an item.
You have to find the item from the 6 QR Codes and give the right object to the right ghost.
THE GHOST TEAM 974 are :
Clovis "Cloclo" ADAM DE VILLIERS as Programmer
Arnaud "Bobo" BRU as Programmer
Pierre "Blenderman" FONTAINE as 3D Artist
Loïc "Logan" MANGLOU as 3D Artist