It works equally in natural and urban spaces. Players collect experiences in nature as animal avatars. These avatars are taken back into the city, where they manifest themselves sonically (through the player's cellphone speaker) with animal sounds, and visually on large interactive walls placed in urban public spaces.

Animal sounds are a delightful departure from the ordinary, not only because they are juxtaposed over an urban environment, but because they signal to you that another player is in the area, which is unpredictable since players are moving.

The interactive wall allows you to showcase your animals, and even perform for friends. This urban experience is complemented with each visit to a natural area (animal sounds and behaviors on the interactive wall become more complex), so the system becomes cyclical: participation in one space leads to rewards and participation in the other.