Terms explained

Giants Village/Giants Game - the game where you can build your own village and join a community space
My village - personal village
Giants World - shared space with all the villages and the shared buildings
Giants Village dApp - the application that will give you instant access to all Giants dApps and 3rd party dApps from partners
Identity service - your profile attached to your Elrond address, easily shared between dApps
Auth service - simple non-custodial auth infrastructure for dApps