Allies are friends who you have connected with in the game. You will want to become Allies with as many friends as you can, because only Allies can send you Distress Calls and other gifts. You can also visit Allies’ maps to collect supplies from buildings, which will provide you with additional Silver and other rewards.
To become Allies with a friend, click on the Allies tab at the top of the game and then select which friends you would like to send requests to. Your friends will have to accept your requests before they are recognized as an Ally. You may have friends that are already playing, but you will need to either accept a request from them or have them accept a request from you before you are Allies.
If you have a friend that is already playing, they might also show up in your Allies bar at the bottom of the page. If you see a friend that is in the Allies bar but is not yet an Ally, click on the ‘Add Ally’ button to send them a request. Allies are important to the game because only Allies can gift you Distress Calls and other items. You are also able to visit Allies’ maps to collect supplies from buildings, which will provide you with additional Silver and other rewards.