is a classic Doraemon adventure that takes the gang into the depths of the ocean. Originally released in 1983, this film is known for its blend of whimsical exploration and serious science-fiction stakes. In early 2026, a high-budget remake titled Doraemon: Nobita and the New Castle of the Undersea Devil was released, modernizing the story for a new generation. Movie Quick Facts 1983 Original 2026 Remake Director Tsutomu Shibayama Tetsuo Yajima Setting Deep Pacific Ocean / Bermuda Triangle Deep Sea / Mu Federation Core Conflict War between Mu and Atlantis Nuclear threat from automated robots Key Gadget Underwater Buggy Tekio Light & Underwater Buggy The Undersea Adventure Doraemon: Nobita and the Castle of the Undersea Devil
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: Nobita’s development shines here; while he remains relatable and clumsy, he displays genuine bravery when facing the Mu civilization’s distrust of "land people". Comparison: Original vs. Remake Movie Quick Facts 1983 Original 2026 Remake Director