The Tempest Cluster was designed as the setting for my Mothership open table.

The Tempest Cluster is located in the Shakespeare Sector, its systems rimspin of the shattered, balkanized remnants of Terran Hegemony. It was previously two unconnected micro-clusters:

• Verstern, connected by a Jump-2 gate to the Oberson cluster
• Ariel and Hajar, connected by a Jump-4 gate to the Banquo cluster

Verstern lay on the edge of the Russo-Germanic Novikov Confederation. The isolated, low-value Ariel and Hajar systems were squabbled over by a variety of megacorp subsidiaries.

The lengthy Jump-1 route between Verstern and Hajar was accidentally discovered by a xenoarchaeology expedition, creating the unified Tempest Cluster. This created a minor trade route between the Oberon and Banquo clusters (albeit inhibited by the Jump-4 link to Banquo), but more importantly, the resources of the Hajar and Ariel systems were suddenly in demand on Katerineta, the old Verstern colony world.

The Tempest Cluster, however, remained an ill-visited backwater.

Everything changed, however, with the discovery of the Ternary – three systems directly linked via Jump-1 points, each with multiple worlds in the habitable zone. It was a massive colonization target – people and megacorp money began flowing into the cluster at an unprecedented rate.

This is the Tempest Cluster today: The fate of a dozen newborn worlds being written among the stars.

Because Jump-1 drives are more common, cheaper, and less prone to time dilation, space naturally becomes divided into clusters of systems connected by Jump-1 points. Galactic directions are divided into rim vs. core and trail vs. spin. Thus, “rimspin” is towards the edge of the galaxy and in the direction the galaxy is spinning.

TEMPEST STAR SYSTEMS

The Tempest Cluster has eight major systems and, of course, numerous dark systems, six of which lie along major trade routes.

Dark Systems: These intermediary systems along the cluster’s jump routes contain little of interest (or, at least, little that has yet been discovered). Ships mostly just pass through these systems on their way from one jump point to another, although there is a risk of pirates and the other horrors of rimspace.

ARIEL

The gateway to the Banquo Cluster, the Ariel system is a barren system. It has numerous dwarf planets in the outer system, but only two planets of note:

• Ariel I is a hot Jupiter which has gotten too close to the star. Its atmosphere is currently being ripped away. A deuterium plasma mining station operated by Salem-Watts called Hephaestus can be found within the “Roche river.”
• Ariel II is a gas dwarf. It also orbits relatively close to the star and has been stripped of its moons.

Prospero’s Dream, a station whose population has recently swelled to 5 million sophonts, orbits Ariel II. The station was dying before the Ternary was discovered, allowing the station to be taken over by the Golyanovo Bratva, a mafia with origins in the Oberon Cluster. The bratva has held onto control with the muscle of the Tempest Mercenary Company, although the rapid expansion of Prospero’s Dream is now taxing the station’s existence in different ways.

THE TERNARY

These recently discovered star systems are filled with colonization and terraforming targets. The resulting colony rush has only been accelerating as more terraforming projects come online.

• Parvati
• Vani
• Laxmi

The systems are named for the Tridevi — the three principle Hindi goddesses.

Pandora Station: Located in the Parvati system, Pandora Station is an infamous X-class “pleasure city” – the perfect place for the best shore leave of your life… if you can afford it.

Moons of Apsaras: Apsaras, a dark gas giant in the Vani system with an abnormally small magnetosphere, is orbited by multiple planet-class moons with terraforming potential.

HAJAR

The Hajar system recently (in astronomical time scales) had multiple terrestrial planets destroyed. (The current theory is that a rogue planet passed through the system. In addition to destabilizing some planets in its own right, it also caused the orbit of Hajar II, a super-Jupiter, to move inward, wreaking havoc in its wake.) This has resulted in multiple asteroid belts, several of which currently orbit at strange inclines to the planetary disk.

Generations of asteroid miners who have made Hajar their home are now having to contend with increased hypercorp interest in the system’s riches. There’s also been a significant uptick in piracy.

JADIS

On the far side of the Hajar system, Jadis is another newly discovered system with multiple terraforming targets. With so much focus already placed on the Ternary, development has been slow here.

The system is currently governed by the Jadis Terraforming Conglomerate (JTC), which is effectively controlled by the Alshaahin megacorp.

Imliq Station: The JTC is based out of Imliq Station, in orbit around a planet named Tasm.

Jadis is named after the “lost” Arabian tribes of Tasm and Jadis.

MRACHNI

Mrachni is a black hole orbited by numerous dead worlds, many of them ten or twenty times the size of Earth. A scattering of isolationists and scientific stations can be found throughout the system.

There are spacer tales of a fabled Eden — a habitable, Earth-like world hidden somewhere within the glare of Mrachni’s accretion disc, warmed by the blueshifted light of the cosmic background radiation. But no reliable evidence of such a place has ever been found.

VERSTERN

Verstern is a border system of the Novikov Confederation.

Katerineta is an old colony world with a population just over 1 billion. The equatorial region is too hot for human habitation, but both polar regions have been settled. The south lacks a continental mass and is referred to as the Archipelago.

LX-510 is a Class-B military port that has expanded to also support trade between the Oberon and Tempest clusters. It’s home to the Novikov Naval Eskadre (NNE) Volk 79, which is spread thin ostensibly providing anti-piracy patrols in the Verstern-Hajar corridor.

MEGACORPS

ALSHAASHIN (Royal Falcon): A terraforming megacorp based out of the Banquo Cluster. The clan-guilds of Alshaahin control the Jadis Terraforming Conglomerate (JTC), which governs the Jadis system.

SALEM-WATTS: A competing terraforming megacorp based out of the Oberon Cluster.

NAMIR-RADI: A hydra-headed hypercorp with multiple subsidiaries active in the Tempest Cluster.

CLOUDBANK: Cloudbank specializes in medicine, biotech, cyberware, androids, and artificial intelligence. They had a growing presence in the Tempest Cluster, but recently pulled out of the cluster entirely for reasons which remain largely unexplained.

Next: Designing the Tempest Cluster