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Rooms are one of the categories of structures in GRAV. Except for Wood Rooms, Rooms can only be built after acquiring the blueprint from the Research Station and by having the required Engineer job level.

When you build rooms next to each other the facing walls or fencing will disappear. If rooms are built using the 'preserve walls' button, all four walls of the room (including walls with a door) will be preserved. This can be used to build complex room connections such as platforms adjacent to rooms without removing walls. It is also possible to build multistory rooms using the O.M.C.R room type.

Rooms can be upgraded to a maximum level of 6. Each level increases the rooms hit points. Wood Rooms are the weakest type of rooms. Stone Rooms require a level 5 engineer and are significantly tougher than wood rooms. Glass Rooms are tougher than Stone Rooms and are commonly used to create stunning views from within a building. Metal Rooms are the toughest room type available and require a level 15 Engineer. This is the type most often used by intermediate to advanced players.

Rooms must be shielded by a Shield Generator or they will decay within 24 hours. This is often overlooked by players new to the game. For this reason it is suggested to only start building a base if the Shield Generator blueprint has been obtained. When shielded, rooms will become resistant to attacks and will not decay.

When upgrading the Room Construction Cost Reduction skill, building cost can be significantly lowered. Using up to four Constructorbots when building lowers the cost to 50%. This applies to base items and upgrades of any type, which makes Constructorbots one of the most useful pets.

Wood Rooms

The most basic room type in GRAV. All room variations are available at start and does not have Job level requirements.

Image Name Description
Wooden Room w Door Wood Room with Door A wooden room with a door.
Wood Balcony Wood Balcony A wood balcony.
Wood Supports Wood Supports Wooden Supports for your rooms.
Wood Stairs Wood Stairs Some sweet stairs to get you to the next floor.
Wood Roof Wood Roof A nice roof piece, to make your rustic shack dreams come true!
Wood Room w Windows Wood Room with Windows A wood room with a nice little window for daylight, or viewing the horrors outside!
Wood Closed Room Wood Closed Room A room with 4 wooden walls. No Door.
Wood Bridge Wood Bridge Bridge Piece - Stronger than a balcony. Useful for construction projects that need to cross longer gaps
Wood Windowed Room OMCR Wood Windowed Room O.M.C.R. Open Multi-Story Contiguous Room. Look for the Forcefield door blueprint! When stacked on another OMCR room, ceiling/floor will be removed to provide open space.
Wood Room w Door OMCR Wood Room with Door O.M.C.R. Make your very own base. You will need to build a door! Open Multi-Story Contiguous Room. Look for the forcefield door blueprint! When stacked on another OMCR room, ceiling/floor will be removed to provide open space.

Stone Rooms

One of the room types in GRAV. All room variations can be acquired at the Research Station and requires the player to have leveled their Engineer to 5.

Image Name Description
Stone Room w Door Stone Room with Door A wood and stone room with a door.
Stone Room w Windows Stone Room with Windows A wood and stone room with nice little windows for daylight, or viewing the horrors outside!
Stone Closed Room Stone Closed Room A room with 4 wooden and stone walls. No door.
Stone Room w Door OMCR Stone Room with Door O.M.C.R. Make your very own base. You will need to build a door! Open Multi-Story Contiguous Room. Look for the Forcefield door blueprint! When stacked on another O.M.C.R. room, ceiling/floor will be removed to provide open space.
Stone Windowed Room OMCR Stone Windowed Room O.M.C.R. Open Multi-Story Contiguous Room. Look for the Forcefield door blueprint! When stacked on another O.M.C.R. room, ceiling/floor will be removed to provide open space.

Glass Rooms

An advanced room type having glass walls, ceilings, and floors. Great for bases or outposts which needs a huge windows for observation, or even just to give your base that luxurious feel. All room variations can be acquired at the Research Station and requires the player to have leveled their Engineer to 25.

Image Name Description
Glass Room W DoorFrame Glass Room with DoorFrame Make your very own base with lookout walls. You will need to build a door! Look for the Forcefield door blueprint!
Glass Bridge Glass Bridge Bridge Piece with Glass - Stronger than a balcony. Useful for construction projects that need to cross longer gaps.
Glass Balcony Glass Balcony Glass room with no ceiling.
Glass Room OMCR Glass Room (O.M.C.R.) Room with a view! Open Multi-Story Contiguous Room. Glass walls for easy observation. When stacked on another OMCR room, ceiling/floor will be removed to provide open space.
Glass Walled Room Glass Walled Room Room with a view! Glass walls for easy observation, metal floor and ceiling for added peace of mind!
Glass Room Glass Room Room with a view! Glass walls for easy observation
Glass Stairs Glass Stairs One step at a time... surrounded by glass!

Metal Rooms

The most common room type of choice among intermediate to advanced players due to the numerous room variations it has. All room variations can be acquired at the Research Station and requires the player to have leveled their Engineer to 15.


Image Name Description
MetalClosedRoomWithDoor Closed Room with DoorFrame Make your very own base. You will need to build a door! Look for the Forcefield door blueprint!
DFence The D-Fence A large fence to keep out bad people, monsters, bugs, or maybe keep them from leaving.
Fence Fence A fence to put around all your play-things.
MetalRoomWithDoor Room with DoorFrame Make your very own base with lookout walls. You will need to build a door! Look for the Forcefield door blueprint!
MetalBridge Bridge Bridge Piece - Stronger than a balcony. Useful for construction projects that need to cross longer gaps.
MetalLookout Lookout Room you can see out of in all directions.
StructuralSupportWLadder Support with Ladder Same as structural support but with a ladder!
StructuralSupport Structural Support Cheap structure which can be built to support pieces above.
MetalPlatform Metal Platform Bare Metal Platform (with no railings).
MetalBalcony Balcony Balcony room with no ceiling.
MetalRoofCorner Metal Roof Corner A roof piece that can be added to the corner of buildings.
MetalRoof Metal Roof Add a cool roof to your space base.
MetalClosedRoom Closed Room (O.M.C.R.) Fully walled in room. Open Multi-Story Contiguous Room. When Stacked on another OMCR room, ceiling/floor will be removed to provide open space.
MetalRoomWithDoor Room with DoorFrame (O.M.C.R.) Make your very own base. You will need to build a door! Open Multi-Story Contiguous Room. Look for the Forcefield door blueprint! When stacked on another OMCR room, ceiling/floor will be removed to provide open space.
MetalClosedRoom Closed Room Fully walled in room (no door frame).
MetalTeleporterRoom Teleporter Room Teleport from base to base! Build one teleporter first, and it will link with the second teleporter you build!
MetalStairs Stairs (O.M.C.R.) One step at a time... Open Multi-Story Contiguous Room. Glass walls for easy observation. When stacked on another OMCR room, ceiling/floor will be removed to provide open space.
MetalRampRoom Ramp Room A ramp that you can stack to create bigger ramps!
MetalStairs Stairs One step at a time...
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