Inspired by Zelda The Wind Waker and a little bit of The Lord of the Rings. La Isla is set in the Zelda Wind Waker universe world but in a more realistic environment. The environment is meant to resemble aspects of the game. The great fairy lives in the fountain of the island and that's why the water is glowing.
Some materials made in Substance Designer for this environment can be seen here: 
http://3dtomas.com/projects/1nRwLZ?album_id=1022944 
http://3dtomas.com/projects/3omwbE?album_id=1022944 
http://3dtomas.com/projects/ba0nov?album_id=1022944 
http://3dtomas.com/projects/lVEBWe?album_id=1022944 
http://3dtomas.com/projects/YaJ2EY?album_id=1022944