The paint mechanic then turns to throwing water, the effect is now temporary, but can be used with numerous interactive elements in the form of paddles, controlling bridges, moving cranes and even dams. The indelible black paint is the players only means of revealing the geometry and progressing through the first few levels, whereupon other colours are introduced. Initially, this is introduced as literal blank canvas in a white, blank world.

There are a number of gameplay mechanics introduced throughout the game, all with the theme of throwing globules of paint to interact with the world. The gameplay uses standard dual-analog or Playstation Move control from a first-person perspective to allow the player to move through the world - the move controller utilising the screen edge to look around. The boy returns to the orphanage and is able to finish his mother's painting of the swan. The boy finds his father, the King, in an unfinished statue and the King gives him his silver brush. The King becomes too focused on his work and his pregnant wife, the boy's mother, leaves him. While there he finds that the King of this land had trouble finishing his work, and ultimately gives up trying to create a city in order to start a family. The game follows the adventures of a recently orphaned child as he chases his mother's unfinished artwork, a painting of a swan, through a strange world. Later mechanics include shooting drops of water onto the geometry to lead climbing vines around the walls, using light mechanics to stay safe and drawing geometry to create platforms that can than be used for platforming. Some areas reveal messages such as 'Don't be afraid' and 'Please wake up.' The game plays like a first-person shooter where the geometry of the level is revealed as ink is shot onto objects in the space. In the first part of the game, the player begins in a space where everything is white. The Unfinished Swan is a game that was first shown at the 2009 Independent Games festival.

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