These are rough estimates on how much data one game uses.
It is strongly recommended to equip your devices with mobile data (also called, 3G, 4G etc.). Loquiz manages short mobile data loss efficiently but while it is possible to play Loquiz game without continuous internet connection (starting and ending the game in Wi-Fi areas) the presence of connection brings several advantages.
In Loquiz outdoor games GPS is needed to open tasks with locations. As the GPS system is based on satellites, good satellite reception is needed to play satisfying game. Luckily most of the devices have inbuilt GPS receiver. Newest devices use Glonass (Russian) and Navstar (American, also known as GPS) together.