The Thousand Suns Campaign Loop
What the Second Edition Aims to Do
One of the things I’ve been working hard to achieve with the second edition of Thousand Suns is to better integrate its take on what I can the “imperial science fiction” literary tradition and the actual play of the game. After all, there are already lots of SF RPGs out there that cover broadly similar ground. What makes Thousand Suns different from them and worth your attention? After a lot of thinking and writing, I think I’ve hit upon something that I hope will answer these questions in a satisfying — and fun — way.
In the second edition, Thousand Suns operates on three interconnected levels: adventures, character development, and the High Struggle. Together, these elements aim to create a setting in which the characters’ actions unfold within a broad “history” rather than being confined to a series of disconnected episodes.
At the most immediate level are adventures, which should be immediately understandable to anyone who’s ever played a roleplaying game. In adventures, characters undertake missions, investigations, diplomatic efforts, exploration, and more on individual worlds or aboard space-based locales, like orbital stations or starships. Adventures usually occur over the course of hours, days, or at most a few weeks and are resolved using the normal rules of play.
For example, the characters might arrive at a world in the Marches whose starport has recently been placed under tight security after several shipments of industrial machinery disappeared from bonded warehouses. A merchant house suspects corruption within the port authority and hires the characters to investigate discreetly. Over the next few days, they question dockworkers, examine cargo manifests, and follow a trail of falsified shipping records that leads to a smuggling ring operating out of an abandoned section of the port.
The adventure might culminate in a confrontation with the smugglers, a tense negotiation with the corrupt official who has been protecting them, or a covert operation to gather evidence without alerting the conspirators. However the situation is resolved, the immediate crisis — and the adventure — is over.
Because interstellar travel along jumplines takes weeks rather than days, characters frequently experience periods of transit. These intervals provide opportunities for characters to pursue their own goals. During a six-week voyage between two worlds, one character might spend time acquiring a foreign language, while another might improve his starship gunnery. In the second edition of Thousand Suns, I’ve eliminated character improvement through experience points, opting instead for a more diegetic approach inspired in part by RPGs like RuneQuest, Pendragon, and Bushido. Consequently, downtime between adventures is when such improvement can occur.
While the characters pursue their personal ambitions, the wider galaxy continues to evolve through the High Struggle, which is intended to model the competition among major factions for influence and power across the Thousand Suns. The High Struggle advances in three-month cycles, representing the slow but constant maneuvering of political, economic, and military forces to achieve their goals and prevent competing factions from doing the same.
During each cycle, factions pursue strategic actions such as diplomacy, espionage, economic expansion, or military preparation. These actions are resolved using mechanics that mirror the core rules of the game: Ability + Skill determines a target number and success is determined by rolling 2d12 under that number. Random events and unexpected developments also occur, ensuring that the course of history nevertheless remains unpredictable. A scientific breakthrough might suddenly shift the balance of power, a colonial governor might declare independence, or pirate activity might surge along a previously quiet trade route.
The results of the High Struggle generate new situations and opportunities that might, in turn, become the fodder for new adventures in which the characters can participate. A successful diplomatic effort might bring stability to one region, while a failed espionage operation could trigger a political scandal that destabilizes another. Suppose, for example, a faction’s strategic action to expand its influence succeeds on a remote mining world. In response, a rival faction secretly begins funding dissidents there. When the characters arrive in the system, they find the colony gripped by political unrest. They might be hired to investigate sabotage at the mines, escort a negotiator attempting to restore order, or even aid one side or the other in the growing conflict. What began as a strategic maneuver in the High Struggle has now become the basis for an adventure.
The passage of time ties these elements together. Travel, training, and other downtime activities gradually advance the campaign calendar. When enough time has passed, a new High Struggle cycle occurs, reshaping the political and economic landscape of the sector. Sometimes these changes take place while the characters are traveling between systems. A crew might depart one world during a period of fragile peace and arrive weeks later to find that a rebellion has erupted or a major trade route has collapsed.
In this way, the characters are never operating in isolation from the wider setting. Their actions may influence the High Struggle directly, such as by destroying a pirate base to improve trade in a region or by delivering sensitive intelligence that could give a faction a decisive advantage in the next strategic cycle. Over time, successful characters may even become significant actors within the High Struggle themselves, commanding fleets, directing intelligence networks, or leading political movements.
Taken together, these elements create a repeating rhythm of play:
strategic developments create opportunities for adventure → adventures lead to travel and downtime → time passes → the High Struggle reshapes the Thousand Suns.
Ideally, the result is a campaign structure in which personal events, interstellar politics, and the slow unfolding of history are all intertwined. The characters may begin as small figures moving through a vast and complex universe, but their actions can gradually shape the fate of worlds among the Thousand Suns.