Social Pyramid Scheme

You get a bonus for inviting your friends and then they have to invite their friends.

Some games will give you a bonus when you invite your friends to play and link to them to your account. This bonus may be a one-time benefit, or it may be an ongoing benefit that improves the gaming experience for each friend that you add. This gives players a strong incentive to convince their friends to play. Those friends then have to sign up more friends and so on, leading to a pyramid scheme and viral growth for the game.

Often, this is combined with another Dark Pattern called Social Obligation where you and your friends can help each other in the game. This leads to a feeling of obligation and people keep playing the game even when they no longer enjoy it.


Examples

Legend of the phoenix Legend of the phoenix
"We have to share the game in fb once for every weeks with a reward of 50 ingots."

Girls' Frontline Girls' Frontline
"Having others "like" your dorm gets you friend points, which are exchanged for cosmetic items. Some events require you get a certain number of "likes"."

ISEKAI:Demon Waifu ISEKAI:Demon Waifu
"Benefits based on number of friends"

Genshin Impact Genshin Impact
"very mild rewards for inviting other players"

Call of Duty®: Mobile Call of Duty®: Mobile
"Rewards for inviting friends."

Delicious World - Cooking Game Delicious World - Cooking Game
"yes, diamonds"

Dragon Mania Legends Dragon Mania Legends
"New players can enter your recruitment code, which will earn you rewards. A certain number of players must be recruited in order to earn exclusive dragons."

Mobile Legends: Bang Bang Mobile Legends: Bang Bang
"Minor in-game currency bonus for friends who join or click on the player's link"

Pocket Frogs Pocket Frogs
"Ability to trade with other players to complete collection"

Dream Girlfriend Dream Girlfriend
"It requires 10 persons to join and play to a certain level for little to no rewards, just one dress set."