Orbital Blues - Starter guide
What is Orbital Blues?
Orbital Blues is a lo-fi space western roleplaying game from SoulMuppet Publishing, written by Sam Sleney and Zachary Cox. It calls itself a game of "sad space cowboys," and that tagline does a lot of work. You play a crew of down-on-their-luck outlaws scraping a living on the fringes of a hyper-capitalist galaxy, chasing the next gig while the bills and the heartbreak pile up. The obvious touchstones are Cowboy Bebop, Firefly and Guardians of the Galaxy: retro-future tech, melancholy and a soundtrack always playing somewhere in the background.
Tonally it sits between two moods. There is the cool of the bounty hunter and the daring heist, and there is the quiet sadness of characters who are tired, broke and haunted by their pasts. The game is built to let both of those live at the table at once.
How does the system work?
Mechanically, Orbital Blues is rules-light and built on SoulMuppet's earlier game Best Left Buried, which traces back through Maze Rats to Chris McDowall's Into the Odd. If you have touched any OSR-adjacent game, the chassis will feel familiar.
Characters have three stats: Muscle, Grit and Savvy. At creation you assign +2 to one, +1 to another and +0 to the last, so everyone is good at one thing, decent at another and average at the third. For most actions you roll 2d6, add the relevant stat and try to hit 8 or higher. That is the whole core resolution.
Advantage and disadvantage are handled cleanly. When you have the Upper Hand you roll 3d6 and keep the best two. When you are rolling Against the Odds you roll 3d6 and keep the worst two.
Two extra numbers give the game its character. Heart is your health, derived from your Muscle score plus eight, and it doubles as a resource you can spend to reroll or buff a roll. Blues is the emotional meter. Each character carries one or more Troubles, the personal baggage that drags them down. When something hits a Trouble, you make a Blues Check, and on a high enough roll you gain a Blues point. Reach eight Blues and you trigger a dramatic scene where the character confronts the source of their pain. It is the system's clever heart: stress is not just a penalty, it is a story engine.
Combat borrows a neat trick from Best Left Buried. You roll 3d6, choose two of them to add to your stat for the attack, and the third die becomes your damage. Combat is quick and can turn lethal fast, on the ground and in space alike. Money matters too: a Credit and Debt system keeps the crew permanently a little broke, which is exactly the point.
What do you need to start?
The core rulebook is all you really need to play. It contains the full rules, character and ship creation, a starting star system, factions and job hooks, plus name and location generator tables that are genuinely useful at the table.
If you want to try before you commit, SoulMuppet released a free quickstart called "An Unchained Melody." It gives you enough rules and a scenario to run a first session at no cost, which makes it an easy way to see whether the vibe lands for your group.
Beyond that everything is optional. The Afterburn expansion adds a detailed sandbox setting, a brochure of spaceship classes and more travel guidance. The Wanderer is a supplement aimed at solo play. You will also want a handful of six-sided dice and a copy of the character sheet, and many groups like having music ready, since picking a theme song for your outlaw is part of character creation.
Who is this game for?
Orbital Blues suits players who care more about character and mood than about deep tactical crunch. If your group enjoys flawed, emotional characters, improvised banter and stories about staying human in a galaxy designed to grind you down, it shines. The Troubles and Blues system rewards players who lean into their character's wounds rather than playing flawless heroes.
It is friendly to newcomers because the maths is light and a session can be running within minutes. It is equally happy with experienced players who want a quick, evocative palette cleanser between heavier campaigns.
Where does it fall short? If you want detailed ship customisation, tactical grid combat or a crunchy economy to optimise, this is not that game. It is deliberately sparse, and some of its setting write-ups are short and impressionistic, leaving you to fill in the gaps yourself.
How does it differ from other systems?
Compared to Traveller, the obvious space-western reference point, Orbital Blues strips out most of the simulation and bookkeeping and puts emotional stakes front and centre. Several reviewers describe it as Traveller filtered through the stripped-down, high-style sensibility of Mörk Borg.
Compared to a Powered by the Apocalypse game, it keeps a more traditional OSR skeleton, the 2d6-plus-stat check, but bolts on narrative machinery through Troubles and Blues. It lives on the border between old-school play and story-forward design, and that blend is a big part of its appeal.
Where do you begin?
Start with the free quickstart "An Unchained Melody" to learn the resolution loop and run a one-shot. Then, if it clicks, pick up the core rulebook and read the GM section and the Troubles rules carefully, since they carry most of the game's identity.
For a first real session, build a small crew together, let each player choose a Trouble and a theme song, drop them into a simple job that can go wrong, and lean into the music and the melancholy. Cowboy Bebop and Firefly are excellent mood references to watch beforehand. SoulMuppet's own site and the active community on platforms like itch.io and Discord are good places to find extra adventures and advice.
Recommended products for this system
To get going, the Orbital Blues core rulebook is the foundation.