In Doom: The Dark Ages, Rubies are a resource essential for pushing your arsenal beyond its basic capabilities. While Gold covers your standard improvements, Rubies are required for high-tier weapon modifications at Sentinel Shrines.
There are 38 Rubies hidden across the campaign, typically found embedded in glowing stone statues within Secret Areas.
While there are 38 Rubies available, you only need 33 to fully max out every weapon in your 16-piece arsenal. This provides a small margin of error (5 Rubies) for players who might miss a particularly well-hidden secret area.
Most Rubies are held by small, kneeling Sentinel statues that emit a bright red glow; however, 4 Rubies are awarded exclusively for completing specific Mission Challenges (such as the Countercult challenge in Chapter 5).
Like other collectibles, these appear as a Red Gem Icon on your map once you are in proximity. If you struggle with them, rest assured that we have properly marked them on our interactive chapter maps for Doom: The Dark Ages.
| Name | Map Location | Details |
|---|---|---|
| RubyChapter 5: The Holy City of AratumRuby | Chapter 5: The Holy City of Aratum | Obtained after dispatching the third group of Cultists. |
| RubyChapter 6: Siege – Part 1Ruby | Chapter 6: Siege – Part 1 | Found under a large bridge in the clearing. To remove the barrier surrounding the statue, make sure you bash the corruption nearby with your shield. You should see a small demonic portal on top of it. Once you destroy it, deal with all the Demons that spawn. |
| RubyChapter 10: The Forsaken PlainsRuby | Chapter 10: The Forsaken Plains | Found on top of the stairs near the locked gate. To lower the barrier surrounding the statue, you must deal with the Demons inside the building. |
| RubyChapter 14: Spire of NerathulRuby | Chapter 14: Spire of Nerathul | In the tower on the west side of the area, you must defeat some demons to disable the red barrier protecting the Ruby. |
| RubyChapter 4: Sentinel BarracksRuby | Chapter 4: Sentinel Barracks | Found on the statue by the gate you'll need to open to exit the Barracks. The Ruby is obtained as part of the main mission. |
| RubyChapter 4: Sentinel BarracksRuby | Chapter 4: Sentinel Barracks | Found in the secret courtyard reached after jumping from the broken bridge and following the cave below. |
| RubyChapter 5: The Holy City of AratumRuby | Chapter 5: The Holy City of Aratum | Found inside the tower. You can collect it after unlocking the locked gate using the Red Keycard. |
| RubyChapter 5: The Holy City of AratumRuby | Chapter 5: The Holy City of Aratum | Found behind the locked gate. |
| RubyChapter 6: Siege – Part 1Ruby | Chapter 6: Siege – Part 1 | Found inside the large cage. You can collect it after pulling the Lever at the end of the cave tunnel. |
| RubyChapter 6: Siege – Part 1Ruby | Chapter 6: Siege – Part 1 | Found behind the Purple Gate. |
| RubyChapter 6: Siege – Part 1Ruby | Chapter 6: Siege – Part 1 | Found on the statue in the middle of the plateau. To lower the barrier, make sure you find the three wolf statues nearby and destroy them with your shield. |
| RubyChapter 7: Siege – Part 2Ruby | Chapter 7: Siege – Part 2 | In the middle of the Secret Room. |
| RubyChapter 7: Siege – Part 2Ruby | Chapter 7: Siege – Part 2 | After climbing the large crate and going up the Secret Ramp. |
| RubyChapter 8: Abyssal ForestRuby | Chapter 8: Abyssal Forest | Obtained after completing the Ghost Buster Challenge, by parrying 3 projectiles from the Revenant that spawns once you collect the Yellow Key. |
| RubyChapter 8: Abyssal ForestRuby | Chapter 8: Abyssal Forest | Found on the upper floor you can reach by jumping on the pad in the flooded cave. |
| RubyChapter 8: Abyssal ForestRuby | Chapter 8: Abyssal Forest | Found on top of the wall you can reach by climbing the wall near the gold on the wooden platform. |
| RubyChapter 9: Ancestral ForgeRuby | Chapter 9: Ancestral Forge | High up, on the edge of a wooden platform you can reach by climbing the walls. |
| RubyChapter 9: Ancestral ForgeRuby | Chapter 9: Ancestral Forge | In the Hidden Room behind the Locked Gate. |
| RubyChapter 10: The Forsaken PlainsRuby | Chapter 10: The Forsaken Plains | Found at the end of the corridor on the lower floor, past the Purple Gate. |
| RubyChapter 10: The Forsaken PlainsRuby | Chapter 10: The Forsaken Plains | Found on the upper level after stepping on the trap and using it as an elevator. |
| RubyChapter 12: Sentinel Command StationRuby | Chapter 12: Sentinel Command Station | Found in the Hidden Area after jumping down the hole. |
| RubyChapter 12: Sentinel Command StationRuby | Chapter 12: Sentinel Command Station | Obtained after killing the tenth demon using an explosive barrel and completing the Wait For It Challenge. |
| RubyChapter 14: Spire of NerathulRuby | Chapter 14: Spire of Nerathul | In the Hidden Room at the end of the underwater tunnel with the fireballs. |
| RubyChapter 14: Spire of NerathulRuby | Chapter 14: Spire of Nerathul | Up, on the edge of a wooden platform in a Hidden Area. Can be reached after taking the Jump Pad, then jumping to an even higher platform nearby. |
| RubyChapter 15: City of Ry’uulRuby | Chapter 15: City of Ry’uul | Found in the Hidden Area you can reach by using the Jump Pad. |
| RubyChapter 15: City of Ry’uulRuby | Chapter 15: City of Ry’uul | At the end of the Hidden Underwater Area (past the movable metal boxes). |
| RubyChapter 16: The Kar’Thul MarshesRuby | Chapter 16: The Kar’Thul Marshes | Found in the Hidden Area after solving the Puzzle behind the Gate. After passing through the Gate, you get teleported to another room. First, jump into the pool and dive down to fall onto a platform. From here, throw your Shield at the Heated Metal under the gate in front. Then, drop from the platform, line up the Cosmic Eye Frame with the Green Eye behind it, and throw your Shield at the Frame to shatter it. Finally, jump into the pool again, dive down, and from the platform, jump to the statue with the Ruby and to the Hidden Area. |
| RubyChapter 17: Temple of LomarithRuby | Chapter 17: Temple of Lomarith | At the end of the Hidden Area. |
| RubyChapter 17: Temple of LomarithRuby | Chapter 17: Temple of Lomarith | In the Hidden Room behind the Purple Gate on the upper level of the shipwreck. |
| RubyChapter 18: Belly of the BeastRuby | Chapter 18: Belly of the Beast | Found in the Hidden Area on the upper level. |
| RubyChapter 19: Harbor of SoulsRuby | Chapter 19: Harbor of Souls | In the Hidden Room you can access after throwing your Shield at the Blue Mechanism. |
| RubyChapter 19: Harbor of SoulsRuby | Chapter 19: Harbor of Souls | Obtained by killing the 75th demon while under the influence of Berserk for the Berserker Challenge. |
| RubyChapter 20: ResurrectionRuby | Chapter 20: Resurrection | In the open. To lower the red barrier protecting it, Shield Charge at the Gore Nest and defeat the enemies that spawn. |
| RubyChapter 20: ResurrectionRuby | Chapter 20: Resurrection | Found at the end of the path behind the Blue Gate. |
| RubyChapter 20: ResurrectionRuby | Chapter 20: Resurrection | In the Hidden Cave behind the Blue Gate. Defeat the enemies that spawn in the cave to lower the red barrier protecting the Ruby. |
| RubyChapter 22: ReckoningRuby | Chapter 22: Reckoning | Found in the Hidden Room after dropping from the ledge above. |
| RubyChapter 22: ReckoningRuby | Chapter 22: Reckoning | In the Hidden Area after climbing the wall. |
| RubyChapter 22: ReckoningRuby | Chapter 22: Reckoning | In the back of the Hidden Cave. |
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