The Adventure (Adventure Mode) is an advanced tutorial for both new and old players. It is the first thing new players see and play right away. Completing it might not give you any items or EXP, however it will teach you the basics of the game.
It can be reached by using Lobbies.
The Adventure is recommended for the new players,however everyone can enjoy it.
The portal will take you to a land where you have to complete tasks in order to save the Qbee World. This is now available in all platforms of Cubic Castles.