Smile with Angry Birds: Two Smile-Interface Implementations

This paper proposes two implementations for promoting mental well-being in Angry Birds, one of the most popular mobile games. In the first implementation, fog is introduced for hiding some parts of the game stage, and the player must smile in order to erase fog. In the second implementation, a special TNT is introduced, which can be exploded by the player's smile. We evaluate each of the two implementations by analyzing effects on the player's mental status and game satisfaction.