Due to the destruction of Romulus in 2387, and as a counter weight to the Tal Shiar and Sela's deceitful Star Empire governed from Rator III, Romulan and Reman fugitives under D'Tan and Obisek declared Mol'Rihan to be the new capital planet of a peaceful and honest Romulan civilization in 2409.
 System description
Radiation levels and seismic instability on the planet indicate that there was a world-wide cataclysmic event in the world's distant past. It will take more study to determine exactly what happened.
 The Iconian Empire
- 200,000 years ago, Dewa III was a colony world of the Iconian Empire. They ruled oppressively over the native Dewans, killing any who did not fall in line.
- When the Iconians' subject races rose up against them, Dewa was the first planet targeted. The rebels bombarded the planet from orbit, killing thousands and destroyed the geothermal taps that provided power to everything on the planet. The Iconians on Dewa III fled through their gateways, abandoning the Dewans, and the rebels moved on to other Iconian worlds.
 The Dewan Civilization
- With the Iconians gone, the surviving Dewans formed their own civilization.
- Thousands of years later, as the Dewans were preparing to launch their first starships, an abandoned Iconian Gateway was found in a subterranean cavern. Tempted by the possibility of instantaneous travel, the space program was abandoned and all resources were thrown toward making the Gateway operational again.
- When the Gateway was ready, it was connected to geothermal power taps to provide the necessary energy. The Dewans failed to realize the bombardment millenia ago had made this dangerous.
- When the Dewans activated the Gateway, it triggered massive earthquakes and volcanic eruptions that wiped out most of the population and bathed the planet in a killing cloud of radiation.
- The surviving Dewans retreated to caves to escape the radiation and the nuclear winter, but ultimately their resources ran out and they died off.
 The Vulcan Outcasts
- Around 2,000 years ago, the Time of Awakening occurred on Vulcan. Vulcan society suppressed its emotions to put an end to centuries of savage conflict. A group known as "those who march beneath the raptor's wings" opposed this solution, seeing it as a betrayal of their souls. They left Vulcan aboard huge generational ships and set off to find a new planet on which to settle.
- The outcast Vulcans eventually reached Dewa III, which they named Vastam. Some desired to settle there, not wanting to return to the cold and cramped ships, while others believed they could not make the necessary changes to live there.
- Eventually an open debate was organized to make the decision. Despite the good intentions, things quickly deteriorated and a massive riot began. By the time it ended, 247 people had been killed.
- The survivors unanimously decided to leave, which they did. They ultimately settled on the planet Romulus and became known as the Romulans.
 The Romulan Republic
- In 2409, a splinter group of Romulans led by D'Tan decided to put aside their history of secrecy and deception and create a new Romulan society. Together with Obisek's Reman Resistance, they colonized Dewa III (renaming it Mol'Rihan, or New Romulus) and founded the Romulan Republic.
 Missions on New Romulus
- “Embassy Officer of the Watch (Daily)”: Assist in the operations of your fleet embassy on New Romulus.
- “Beginning of a New Future”: The player can earn extra marks by assisting in a random zone on New Romulus
- “New Romulus Aid”: The Romulan Ambassador asks the player to aid D'Tan and his people on New Romulus.
- “Lending a Hand”: The player must complete a "New Romulus" mission.
- “New Romulus Transporter System”: The player records their transporter pattern into all New Romulus transporters as a security precaution.
- “New Romulus: Staging Area”: The player helps the colonists out around the Staging Area.
- “New Romulus: Vastam Peaks”: The player helps out at the Vastam Peaks.
- “New Romulus: The Atlai”: The player helps the colonists out around the Atlai.
- “New Romulus: Paehhos Crater”: The player helps the colonists out around the Paehhos Crater.
- “New Romulus: Hwael Ruins”: The player helps the colonists out in the Hwael Ruins.
- “New Romulus: Isha Forest Epohh Collection”: The player assists in preserving the local Epohh population.
- 5 man-instances:
- Tier I: “New Romulus: Warehouse”: The player attempts to settle a dispute between Madran and the New Romulans in a warehouse in the Staging Area.
- Tier II: “New Romulus: Mountain Base”: The player is tasked with striking a Tal Shiar base in the Mountain Pass.
- Tier III: “New Romulus: Overgrown Caves”: The player helps locate a missing scientist in the Paehhos Caves.
- Tier IV: “New Romulus: The Power Source”: The player has to shut down a power source in Tholian-occupied volcanic caves under the Hwael Ruins.
- Cutscene missions
- Tier I: “Hidden Camera”: Someone gives the player a recording of D'Tan sparring with Subcommander Khiana, a Tal Shiar officer.
- Tier II: “Secret Shuttle Codes”: The aforementioned anonymous person leads the player to a Tal Shiar Shuttle that contains a recording of Commander Ruul discussing D'Tan with Khiana and a Hirogen Alpha.
- Tier III: “Web Access”: The player watches a communications log showing the Tholian plans to exploit the ancient technology found beneath the surface of New Romulus.
- Tier IV: “Latest Findings”: A Romulan archeologist explains D'Tan and the player her recent findings on the fate of the ancient Dewans.
- Tier V: “Secrets of the Ancients”: The player discovers an Iconian gateway beneath the surface of New Romulus.
 Staging Area
The Staging Area is where the player will arrive upon beaming down. This area contains the Fleet embassy, as well as access to the bank, mail, and exchange. A vendor selling consumable devices, personal shields, and body armor also conducts business here.
 Vastam Peaks
 Mountain Pass
In the north of Vastam Peaks lies the misty Mountain Pass. This area also has a transporter for fast access.
 The Atlai
 Isha Forest/Epohh Fields
The Epohh Fields are, as the name suggests, home to a variety of epohh species.
 Paehhos Crater
The Paehhos Crater is a region located south of Vastam and east of Hwael. It is home to many species including Armored hatham, Vivver cats, and driclae. Hirogen hunters also stalk the area, looking for worthy prey.
 Hwael Ruins
The Hwael Ruins are all that remains of an extinct civilization that dominated the planet long before the ancient Romulans arrived. Tholian raiding parties frequent the area, so players should be on their guard when traveling through Hwael.
 Underground Ruins
In the south of Hwael Ruins lies the mysterious Underground Ruins. This area also has a transporter for fast access.
Numerous accolades can be obtained on New Romulus:
- Exploration Accolades - New Romulus
- Lore Accolades - History of New Romulus
- Lore Accolades - Last Days of the Dewans
General New Romulus Accolades:
New Romulus is located close to the Azure Nebula.
The U.S.S. Huxley surveying the planet for colonization.
- New Romulus and its resident sector block were added to the game in Season Seven: New Romulus. It is intended to continue the story of Cloaked Intentions, and as such it is only accessible to Level 50 players.
- New Romulus is the largest adventure zone, and the largest map in general, in the game.
- The planet's eerie blue glow from orbit is due to its proximity to the Azure Nebula.
- "Mol'Rihan" is also an informal name for Empress Sela's capital city on Rator III.
- A player-made project, started from December, 2012, created a special chat channel, "Public Service", which allows Players to ask for invites to the various Fleet Embassies. It is intended to allow players quick access to New Romulus. You can join this channel by entering /channel_join "Public Service" in your chat bar.
- With the launch of Legacy of Romulus, New Romulus (along with the Romulan Flotilla) became the primary social hub for Romulan Republic players, just as Earth Spacedock and Qo'noS are for Federation and KDF players, respectively.
- DiWahn (planet) at Memory Beta, the non-canon Star Trek Wiki.
- New Romulus at Memory Beta, the non-canon Star Trek Wiki.
|Details||Romulan Republic • Romulan • Reman • New Romulus • Romulan Flotilla • The Vault|
|Ground Forces||Romulan Analyst • Technician • Recruit (Romulan) • Uhlan • Sublieutenant Medic • Guard • Shadow Guard • Centurion • Centurion Engineer • Centurion Medic • Centurion Scientist • Guard Elite • Shadow Guard Elite • Dark Shadow Guard Elite • Subcommander • Subcommander Engineer • Guard Commander • Romulan Commander • Guard Captain|
|Starships||Romulan Shuttle • Scorpion Fighter (Mob) • T'varo Light Warbird (Mob) • Dhelan Warbird (Mob) • Mogai Heavy Warbird (Mob) • D'deridex Battlecruiser • Ha'apax Advanced Warbird (Mob) • Scimitar Dreadnought|
|NPCs||Avran • D'Tan • Mivek • Obisek • Temer • Tovan Khev|
|NPC starships||R.R.W. Deihu • R.R.W. D'serek • R.R.W. Hyperian • I.R.W. M'sarr • Rerik • Zdenia|
|Details||Reman Resistance • Reman • The Vault • Crateris • Remus • New Romulus|
|Ground Forces||Guard • Shadow Guard • Guard Elite • Shadow Guard Elite • Dark Shadow Guard Elite • Guard Commander • Guard Captain|
|Starships||Scorpion Fighter (Mob) • T'varo Light Warbird (Mob) • Dhelan Warbird (Mob) • Mogai Heavy Warbird (Mob) • D'deridex Battlecruiser • Haakona Advanced Warbird (Mob) • Scimitar Dreadnought|
|NPCs||Khiy • Obisek • Rashna • Slamek|
|NPC starships||I.R.W. Decimus • Reman Scout • Rerik • Zdenia|
|Hubs & Starbases in Star Trek Online|
|Federation||Social||Earth Space Dock • Deep Space K-7 • Memory Alpha • Starbase 39 • Starfleet Academy/Earth|
|Mission||Facility 4028 • Donatu Research Station • Starbase 24 • Starbase 82 • Starbase 114 • Starbase 157 • Starbase 234 • Starbase 236 • Starbase 375 • Donia Station • Korvat Medical Lab • Omar Station • Outpost Quebec Alpha • Penal Colony 47 • Tazi Space Station • Utopia Planitia Shipyards • Vulcan Space Dock|
|Klingon||Social||First City/Qo'noS • Ganalda Station|
|Romulan||Social||New Romulus (Mol'Rihan) • Romulan Flotilla|
|Mission||Gasko Station • Rh'Ihho Station • Virinat • S'harien Station • The Vault|
|Other/Neutral||Social||Hathon/Bajor • Deep Space 9 • Drozana Station • Captain's Table|
|Mission||Deferi Outpost 3 • Empok Nor • Treasure Trading Station • Undine Base • Station Alpha|