One of the most useful structures in Subnautica is the Multipurpose Room, offering players a large and versatile space to expand their underwater base. Whether you’re looking to create a farming area, a scanner room, a lab, or a habitat with lockers and crafting stations, the Multipurpose Room is the foundation for building out your dream base. But before you can start constructing it, you’ll need to locate and scan its fragments. Understanding how to get the Multipurpose Room early in the game can significantly improve your gameplay and survival experience in the alien ocean world.
What Is the Multipurpose Room?
Overview and Functionality
The Multipurpose Room is a large cylindrical room in Subnautica that players can build using the Habitat Builder once its blueprint is unlocked. It requires six Titanium to construct and offers a spacious interior compared to other modules like the I-Compartment or X-Compartment.
This room serves as the foundation for many base functions. You can install solar panels or bioreactors nearby to power it, place growbeds for food, use it to house crafting machines, or even build multiple levels by stacking more Multipurpose Rooms vertically with ladders. Its versatility makes it a core part of most base designs.
How to Unlock the Multipurpose Room
Finding the Blueprint Fragment
To unlock the Multipurpose Room in Subnautica, players must scan its blueprint fragment using the Scanner tool. Unlike some other blueprints that require multiple fragments, the Multipurpose Room only requires one scan to be unlocked.
The fragment is found in specific abandoned bases scattered around the ocean floor. The most reliable location to obtain the Multipurpose Room blueprint is theDegasi Seabaselocated in the Jellyshroom Cave biome. This area is accessible relatively early in the game and is one of the most consistent sources for unlocking this essential structure.
How to Reach the Jellyshroom Cave
Preparation and Requirements
Before heading to the Jellyshroom Cave, it’s important to be properly equipped. The cave is located around 150-300 meters below the surface and contains hostile fauna such as the Crab Snake. You’ll want to ensure you have:
- A Seamoth with at least one depth module
- A high-capacity O₂ tank
- A Scanner for blueprint fragments
- A Repair Tool in case your vehicle is damaged
- A Pathfinder Tool or beacons to help navigate back
The entrance to the Jellyshroom Cave can be found near the coordinates of Lifepod 17 or in grassy plateaus around 300 meters northwest of your starting location. There are multiple openings, but all lead to the same expansive underground system.
Locating the Degasi Base
Once inside the cave, look for a small base structure surrounded by Jellyshrooms. This is the abandoned Degasi habitat built by survivors prior to your arrival on the planet. Inside and around the base, you’ll find various scannable items including the Multipurpose Room fragment.
The room itself appears intact in the structure and scanning any wall or surface of the cylindrical room will unlock the blueprint. Make sure to explore thoroughly, as there are other useful blueprints nearby like the Alien Containment, Water Filtration Machine, and Observatory.
Building the Multipurpose Room
Using the Habitat Builder
After scanning the fragment, the blueprint will be added to your Habitat Builder. To construct it, all you need is:
- 6x Titanium
Titanium is easily obtained by salvaging metal debris from wrecks or by breaking limestone outcrops. Once you have enough, use the Habitat Builder tool and select the Multipurpose Room from the menu. Place it near your existing base or as part of a new structure. Be sure it’s connected to a power source like Solar Panels or a Bioreactor to make it functional.
Tips for Optimal Placement
The room can be placed on land or underwater. If building underwater, place foundation pieces beneath it for structural integrity. Although the Multipurpose Room can be used on its own, it’s commonly attached to corridors or other rooms for better base design.
- Use vertical connectors to stack rooms and maximize space
- Add reinforcements or bulkheads to maintain hull integrity
- Connect rooms with L or T junctions for creative layouts
What to Use the Multipurpose Room For
Base Expansion Ideas
Once you’ve constructed your Multipurpose Room, the possibilities are nearly endless. Players typically use it for various essential functions:
- Indoor Growbeds: Ideal for planting Marblemelon, Chinese Potato, and Lantern Fruit
- Storage Area: Add multiple Lockers or Wall Lockers for organizing materials
- Crafting Center: Install a Fabricator, Radio, and Medical Kit Fabricator
- Power Room: Use it to house a Bioreactor or Nuclear Reactor
- Observation Room: Add windows and enjoy the view of the deep ocean
Because of its size, this room can also be customized with furniture such as beds, chairs, desks, and posters, giving your base a personal and lived-in feel. If you’re roleplaying or aiming for immersion, the Multipurpose Room is the perfect canvas.
Other Locations to Find the Fragment
Alternative Areas
If you miss the Jellyshroom Cave or prefer not to go into deep biomes early in the game, there are a few other locations where the Multipurpose Room fragment may appear. These include:
- Floating Island: Home to another Degasi Seabase located on the mountain
- Deep Grand Reef: Later-game location with another Degasi habitat
The Floating Island, located southwest of your starting lifepod, is a great alternative for players who prefer to avoid deep underwater caves. On this island, you’ll find a base that contains the Multipurpose Room and several other valuable blueprints.
Helpful Tips for New Players
Unlocking the Multipurpose Room early on can change how you play Subnautica. It gives you a large space to expand your storage and sustainability. Here are a few tips to keep in mind:
- Scan everything around Degasi bases to get multiple useful blueprints
- Return with a full inventory of scanned tech and plant seeds
- Use signs or labels inside your room to organize storage effectively
- Always reinforce your base if building multiple large rooms
The Multipurpose Room also sets the stage for advanced crafting and survival mechanics. As you explore deeper biomes, having a solid and efficient home base will make the journey much smoother.
Getting the Multipurpose Room in Subnautica is a key milestone for any player serious about base-building and long-term survival. By locating the Degasi Seabase in the Jellyshroom Cave or exploring the Floating Island, you can unlock this vital structure early in your adventure. With just one scan and six Titanium, you’ll be able to transform your basic shelter into a fully operational habitat. From farming and storage to crafting and sleeping quarters, the Multipurpose Room offers everything you need in one compact, expandable space. Prioritize it early, and you’ll be well on your way to thriving in the depths of Planet 4546B.