You get a bonus for inviting your friends and then they have to invite their friends.
"The game has a referral system where you can get a lootbox with strong items for referring new players to the game."
"Yes people can log on to gift their friends reward bags, but most people don't do it a lot."
"If you invite a friend to play, you get some crystals, which are this app's premium currency."
"You and your friend will get the Swordsoul structure deck with the new/return players campaign. This deck can still reach the highest rank in the game with some cards replaced, it used to be Meta."
"You can be invited to a party with other players via; a raid, farm, and events which can be beneficial to interact with others. But you could become an easy target to be kicked out of the party like an example of for having a poor performance during leveling/farming sessions, one petty mistake, or in general having your build and class scuffed. Asobimo had FAILED to identify and report other players who are toxic or cheating, while innocent players have caught in a crossfire for "cheating"."