# Abnormal1999:SU - Unlocking the 4th Dimension: Deep-Sea Submarine Puzzle Horror > Investigate strange occurrences aboard the Nautilus submarine in this 2.5D puzzle horror adventure. Play as Dr. Pierre and unravel the myste Release date: 2024-05-02 Tags: puzzle, psychological-horror, exploration, detective, mystery, 2.5d, third-person, singleplayer Source: https://store.steampowered.com/app/2925090/ Article page: https://web-autoai.com/articles/abnormal1999su-unlocking-the-4th-dimension-dive-into-deep?lang=en Prices and ratings change over time — check the article page for the current values. --- ## Overview Abnormal1999:SU - Unlocking the 4th Dimension invites players into the eerie depths of the ocean aboard the Nautilus submarine. When a sudden mechanical failure strikes, Dr. Pierre must investigate a series of abnormal intrusions. This title blends puzzle-solving, exploration, and psychological horror elements, tasking players with uncovering the secrets hidden within the vessel. ## Highlights * **Intriguing Setting:** Explore the mysterious and unsettling atmosphere of the Nautilus submarine, lost in the azure abyss. * **Core Gameplay:** Engage in 2.5D deduction and puzzle mechanics, requiring players to combine observations and logic to progress. * **Narrative Focus:** Follow Dr. Pierre's investigation to unravel the secrets of the Nautilus and the strange anomalies encountered. ## Who It's For This game is designed for players who enjoy atmospheric psychological horror experiences, intricate puzzle-solving, and narrative-driven exploration. Fans of detective and mystery genres will find themselves drawn into the unfolding enigma aboard the Nautilus. ## Game Info Developed and published by QZQ Studio, Abnormal1999:SU - Unlocking the 4th Dimension was released on May 2, 2024. It features a single-player experience with support for English and Japanese languages, among others. The game utilizes a 2.5D perspective and incorporates elements of exploration, puzzle-solving, and psychological horror.