AFK mode is fairly self explanatory. Entering this realm will allow you to AFK for spins. You also can gain chests that you are able to redeem once back in the main game. There is an auto AFK feature so use of an auto clicker isn’t required.
To get to this realm, locate the wooden door at the spawn area and interact with it. Alternatively, if you are AFK in the main world for too long you will automatically be sent to the AFK mode.