EN MAR 31, 2026 •
5 min read

Debris: Beginner's Guide to Underwater Survival (Moonray Studios)

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Quick Summary

Debris, by Moonray Studios, is an atmospheric underwater adventure game where you play as Ryan, a videographer trapped under Arctic ice, relying on your AI companion Sonya and her Squid ROV to survive. The core gameplay revolves around managing your suit's energy, which depletes with movement, actions, and damage, and is refilled by harvesting glowing orange balls. Players must navigate linear, obstacle-laden caverns, strategically using a gun with flares and spears against hostile aquatic creatures while uncovering a mystery.

◈ Navigation Index ▼
  • 01 Introduction to Debris
  • 02 Understanding the Core Mechanics
  • 03 Navigating the Depths
  • 04 Combat and Enemy Encounters
  • 05 Essential Tips for Beginners
  • 06 Controls Overview
  • 07 Achievements and Replayability

Debris: Beginner's Guide to Underwater Survival (Moonray Studios)

This guide focuses on "Debris," the underwater adventure and survival game developed by Moonray Studios, released in October 2017. You assume the role of Ryan, a videographer working for ALTA, who becomes separated from his guide, Chris, and is stranded beneath the Arctic waters. Your sole companion is Sonya, an ALTA-produced AI, and her Squid drone, which are crucial for your survival in the hostile deep.

Introduction to Debris

"Debris" plunges players into a surreal frozen ocean, emphasizing atmosphere, intrigue, and a constant sense of being trapped. The narrative unfolds as you navigate collapsed rock and thawing ice, with a ticking oxygen timer serving as a constant reminder of the stakes. While often compared to "Subnautica" due to its underwater setting, "Debris" is a more linear, narrative-driven experience. The game also features a co-op mode, allowing a second player to control Sonya's Squid drone, which can enhance the experience.

Understanding the Core Mechanics

Survival in Debris hinges on managing your suit's energy, which is shared between Ryan and Sonya. This energy is vital for everything from your oxygen supply to your weapon's ammunition.

  • Energy Management: Your energy bar constantly depletes, and it decreases further when you shoot your weapon or take damage. When energy reaches zero, Ryan can freeze, drown, or be crushed by pressure.
  • Harvesting Power: To replenish your energy, you must harvest glowing orange energy balls, a task performed with the help of Sonya's ROV companion, the Squid. Level designs often feature energy groves, typically guarded, followed by a gauntlet, and then another energy grove. The game encourages strategic thinking about how and when to approach these guarded groves to ensure the energy gained outweighs what's spent.
  • Companion Assistance: Sonya, your AI companion, is integral to your journey, providing navigation assistance and explaining mission intricacies. In co-op, another player can directly control the Squid drone, managing light and power harvesting.

    • Navigating the Depths

    Movement in Debris is straightforward, utilizing standard controls for forward, backward, left, right, rising, and falling. There is no sprint or dodge mechanic, emphasizing a sense of powerlessness against the ocean's environment. While the game is largely linear, guiding Ryan from one obstacle-laden cavern to the next, there are occasional side passages for exploration. A minimap is available to aid navigation, but slow movement speeds and large levels can still lead to getting lost. The sound and visual design contribute to a general sense of unease and tension, with odd thumps and clicks filling the environment.

    Combat and Enemy Encounters

    Early in the game, Ryan is equipped with a gun that fires flares and spears. Each shot deducts time from your overall survival clock; a flare costs one minute, while a spear costs three. This mechanic is designed to instill caution and encourage strategic combat decisions.

  • Weaponry: Flares can deter some fish, while lasers (blue bolts of energy) are effective against smaller fish but bounce off larger ones, including sharks.
  • Hostile Creatures: The underwater environment is populated by hostile aquatic creatures. Glowing sea creatures are generally bad news. Specific enemies include Bobbit worms, which require precise timing to avoid their attacks, and large glowing fish that deal damage upon contact.

    • Essential Tips for Beginners

  • Conserve Energy: Every action, including shooting and taking damage, consumes your precious energy. Be mindful of your power levels and prioritize harvesting when necessary.
  • Strategic Engagement: Approach guarded energy groves with caution. Weigh the cost of fighting enemies to access the grove against the energy you expect to gain.
  • Master Movement and Timing: Against enemies like Bobbit worms, timing is crucial. Use flares to trigger their attacks, wait for them to retreat, and then move past. For glowing fish, spears can be used to move them out of your path.
  • Utilize Sonya and the Squid: Sonya is your lifeline for navigation and energy harvesting. In co-op, coordinate with your partner who controls the Squid to maximize efficiency and minimize risks.
  • Explore Thoughtfully: While the game is linear, some side passages exist. Use your minimap, but be aware that slow movement can make backtracking tedious if you get disoriented.

    • Controls Overview

    The controls for Debris are relatively simple, primarily using keyboard and mouse, or a gamepad.

  • Movement: WASD or IJKL (Keyboard), Left Control Stick (Gamepad).
  • Move Up: Space (Keyboard), Left Shoulder or Right Control Stick Press (Gamepad).
  • Move Down: C or N (Keyboard), Right Shoulder or Left Control Stick Press (Gamepad).
  • Interact/Charge: E or U (Keyboard), A (Gamepad).
  • Call Squid: Q (Keyboard), B (Gamepad).
  • Fire: Mouse 1 (Keyboard), Right Trigger (Gamepad).
  • Switch Tool Mode: Mousewheel up/down (Keyboard), Y (Gamepad).
  • Pause: ESC (Keyboard), Start (Gamepad).

    • Achievements and Replayability

    "Debris" offers a variety of achievements, many of which are missable, requiring multiple playthroughs to unlock them all. A 100% achievement completion typically takes at least four, and more realistically five, playthroughs. Achievements are categorized into Exploration, Danger, Montipora Logs, and Ending-related challenges. Completing specific sections without taking damage, such as the worm-infested areas or glowing fish deltas, are examples of danger-related achievements. Finding all secret Montipora throughout the cave network is an exploration challenge. The game is not excessively long, with speedruns possible in 2-3 hours.

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    [ System Notice ]

    This content was generated by AI. Information may be unverified and could have changed due to game updates. Verify critical data before proceeding.

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    FAQ Database

    Q.01 What kind of game is Debris?
    ▼

    Debris by Moonray Studios is an atmospheric, linear, narrative-driven underwater adventure and survival game, often described as a psychological mystery.

    Q.02 Who are the main characters in Debris?
    ▼

    You play as Ryan, a videographer, who is accompanied by an AI named Sonya and her Squid ROV.

    Q.03 How do I manage my health and resources in Debris?
    ▼

    Survival relies on managing your suit's energy, which acts as your oxygen and ammunition. Energy is consumed by movement, shooting, and taking damage, and is refilled by harvesting glowing orange energy balls with Sonya's Squid.

    Q.04 Is there combat in Debris?
    ▼

    Yes, you are given a gun that fires flares and spears. Flares deduct one minute of time/energy, and spears deduct three. You'll encounter hostile aquatic creatures that react differently to your weapons.

    Q.05 Can I play Debris with a friend?
    ▼

    Yes, Debris features a co-op mode where a second player can control Sonya's Squid drone, managing light and harvesting power.

    Q.06 How long is Debris?
    ▼

    The game is not very long; speedruns can be completed in 2-3 hours, but achieving 100% of the achievements may require 4-5 playthroughs due to many missable achievements.

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