Alien Tablets (Disambiguation)

Purple Artifact
The Purple Artifact is usually the first Artifact to be found, and is very frequently used in a number of locations. There are currently eight found in the game. The Quarantine Enforcement Platform requires three to unlock the upper entrance, the anti-gravity elevator, and the control room. The three Artifacts needed to unlock these doors can be found onsite; two on Mountain Island, and one inside the facility in the room before the deactivation terminal. A fourth can be found in the Degasi Seabase on the Floating Island. The rest can be found in Mountain Island's Caves. After scanning the broken Artifact in front of the Quarantine Enforcement Platform's land entrance, the player can craft Purple Artifacts at the Fabricator using an Ion Crystal and two Diamonds.

The Purple Artifact can be used optionally to access the Dunes, Sparse Reef and the Blood Kelp Zone Precursor Caches. It is also used to unlock certain doors in the Precursor Thermal Power Generator and Disease Research Facility.

Orange Artifact
The Orange Artifact can be found in the Deep Grand Reef Degasi Seabase on a desk, and is presumed to be what Marguerit Maida had discovered, as shown in this log. This Artifact is used to access the Lost River Laboratory. The Orange Artifact is craftable, but only one terminal uses the artifact.

Blue Artifact
The Blue Artifact can be found in the Precursor Thermal Power Generator, and is used to access the Primary Containment Facility. One artifact is needed to gain entrance to the facility, and a second one is used to unlock the Moonpool room. However, only one artifact is available for pickup from the Alien Thermal Plant. It is craftable.

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Trivia

 * Originally the Purple, Red, Blue and Orange Artifacts took up four (2x2) inventory slots, while White Artifacts originally took up one (1x1) inventory slot.
 * There used to be a fifth (White) Artifact, but it has been removed from the game.