SU is a 2.5D deduction puzzle game. The submarine Nautilus suffers a mechanical failure during its voyage. Dr. Pierre investigates and finds anomalies in every area. Explore the deep blue depths, follow Dr. Pierre as he unravels the secrets of the Nautilus.

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From the game’s Steam news feed. An announcement is not a build: games can update without posting. Every public build we saw is on the Builds tab.