Hidden Deep is a 2D action and exploration sci-fi thriller set in a deep-sea mining and research facility more than a mile beneath the ocean floor. Players take on the role of the leader of a rescue team sent to investigate a lost expedition after contact breaks off following 681 days of silence. The game combines direct control of team members with equipment operation to navigate hazardous underwater caves while confronting unknown threats.
Gameplay
The core loop centers on exploration and coordination in a hostile environment. Players can switch between controlling individual team members or issuing orders to handle simultaneous tasks across the facility. Specialized tools form the backbone of progression, including grappling hooks for traversal, scanners for mapping and detection, drones for remote scouting, and heavy machinery for clearing paths or manipulating structures. Environmental hazards and alien life forms require careful positioning and use of these tools to survive encounters. The 2D side-view perspective emphasizes precise movement and resource management as players descend through interconnected cave systems and research areas.
Game Modes
Two primary modes structure the experience. The single-player campaign features hand-crafted levels that advance a narrative-driven sequence of missions focused on investigation and survival. Challenge mode provides randomized levels where players complete varied objectives, supporting both solo play and local co-op. Local co-op and remote play options allow shared sessions in challenge mode, with online co-op support also available. These modes emphasize replayability through different mission goals and level layouts without altering the fundamental mechanics of team command and equipment use.
Story and Setting
The narrative unfolds in a remote sub-oceanic facility where researchers encountered unexplained anomalies. The second expedition arrives to uncover the fate of the first team and any survivors. Environmental storytelling and direct encounters reveal details about the facility's operations and the nature of the threats below. The atmosphere draws from classic sci-fi influences, presenting a tense mix of isolation, discovery, and sudden danger as players operate in confined spaces filled with dark corridors and flooded sections.
Is It Worth Playing?
Hidden Deep delivers a focused 2D sci-fi experience centered on exploration, team coordination, and equipment-driven problem solving in a single-player campaign alongside challenge mode for additional variety. Local and remote co-op extend the challenge mode for shared play, while online co-op adds further options. The game remains in Early Access with a stable core that includes multiple levels and monster encounters. It suits players who enjoy methodical 2D action-adventure titles with horror elements and cooperative elements in a compact format. Those seeking ongoing content updates should note the current development pace before committing.