Welcome - Alpha Cephei

A bright star shines in the
Cepheus constellation

Introducing Alpha Cephei: a complete, fully-featured space exploration adventure role-playing ruleset

Embrace an advanced science fiction RPG that aims at being approacheable and playable for people with no previous experience of sci-fi roleplaying.

Space travel, ship-to-ship combat, off-world trading, vessel design, psionics, aliens, world generation and more… in a concise package.

Comfortable layout for the best accessibility at the tabletop—fully cross-referenced with clickable links, including a thorough keyword index.

A deep yet very streamlined abstraction of staple sci-fi scenarios such as space warfare, starship design, interstellar trading, and the creation of worlds and alien creatures.

Revamped signature career-based character creation mini-game.

Compatible with pre-existing content for classic systems such as Cepheus Engine or Traveller SRD (no affiliation, based only in OGL content).

Why play Alpha Cephei

The aim of Alpha Cephei is to provide an easy, approachable entry point to sci-fi and space-based roleplaying adventures, based on the advanced rules systems found in the Cepheus Engine, with the support of additional information to make the game understandable to newcomers with no previous knowledge of classic sci-fi gaming.

Mechanically, this game is similar and compatible to Cepheus Engine and most of its derivatives. That is to say, it is ruled by a simple, skill-based 2D6 core mechanic, with a rich character creation experience and flexible options for science fiction adventuring, albeit tweaked for ease of play, with a flatter learning curve and an intuitive layout.

Alpha Cephei is based on and inspired by Open Game Content mainly from the Traveller RPG SRD, the Cepheus Engine SRD and the (original) Cepheus Light RPG.

Full Foundry VTT support is available.

Learn more

In the making

Expect these items as free updates to your purchase in the near future (in no particular order).

(Roadmap soon available here.)

Awesome Mystery September 24 update. (Just a few days away!)
Complete System Reference Document, open-licensed under the same terms as Cepheus Engine.
~~Full Foundry VTT support (through the use of the TwoDSix system package).~~ (Done!)
Sharing of all AI-generated art from the book, completely free to use anywhere, for personal or commercial purposes.
~~Ship design spreadsheet utility.~~ (Done!)
~~Existing spaceship deckplans in gigantic sizes for digital or print.~~ (Done!)

Under construction (and you can get involved)

I’m actively working on additional content for the base game, and you can get involved. I’d love to hear your wishlist for the sci-fi game of your dreams. Direct-message me over Discord to share your experiences and feedback. Your input will help shape the future of Alpha Cephei!

Outer space is the limit!

I have planned…

Core rulebook in premium print version.
Premium deck plans for all 21 featured common spacecraft, completely free and open licensed for other Cepheus games (that’s right, I’m donating all deckplans I create for Alpha Cephei to the community).
Web-apps (and possibly native mobile apps) for generating new characters, new worlds, encounters and alien creatures.
Fillable digital character sheet.
Sheets for spaceships, worlds, alien creatures.
Content expansions (ie. alien/creature manuals, additional careers, sandboxy generators, etc.)
New, completely original, fully-featured campaign settings.
Human-made commissioned premium artwork.

Please note that any additional content in this section is dependent on the success of the product sales to cover production costs and bills.