Blasted Tokyo

Blasted Tokyo is a world found in Shin Megami Tensei IV.

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A desert wasteland filled with holes and debris, with poisonous air. The terrain has been changed so much that no one can leave Tokyo. The Samurai Flynn, Walter, and Jonathan end up here after the activation of the Yamato Perpetual Reactor. They arrive at the Counter-Demon Force Base which remains mostly untouched when compared to the outside. The people live in the underground district of Shinjuku, which has been built into a shelter below ground. The people wear robes and cloaks that cover their entire bodies, along with goggles to keep the poison spread by the Tormentor.

The world became this way due to God's Wrath, which others mention was inflicted on a global scale, meaning that even if the people leave other powers such as America and China are in a similar state.