 In Proteus , players explore an island from a first @-@ person perspective . The island is drawn in a pixel art style and contains hills , trees , structures , and animals such as frogs and rabbits . Its layout is different each time the game is played . The focus of the game is on exploration rather than interaction , as there is no narrative and the player is given no instructions on how to proceed . Possible interactions are limited — for example , animals may run away when players come too close . The soundtrack changes depending on the player 's movements and location . It may become silent when the player is at the top of a hill or sonically dense as they travel down . The soundtrack will add extra sounds and notes when the player nears objects or animals . 
