Building relationship with strangers is a popular topic in game industries. There are lots of games aim to create an immersive environment to promote social interaction between users. Meanwhile, due to the increasing performance of augmented reality device, it’s possible for users to wear AR device to go outdoors and meet the others face to face. Therefore, we combine the immersive experience with the advantage of face-to-face social interaction, we developed an augmented reality social game: HeyPet.