N-Sanity Island West is the second HUB World in the Nintendo DS version of Crash of the Titans.
As the name suggests, it is the west part of N. Sanity Island. It looks very different from other depictions of the island, particularly for the presence of a giant factory owned by N. Gin and a big jungle/ruins are set in a volcanic zone with flowing lava all around.
Like all the other HUB worlds in the game, Coco's shop can be found here as well as a pachinko machine.
After collecting the 2 crystals from the levels, the player can challenge N. Gin, the boss of the area. It is in the introductory cutscene to this boss that the player learns about Nina's plan to convince all Cortex's minions to join her side in an attempt to overthrone his uncle Doctor Neo Cortex and take control of the Cortexbot.