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Quantum Engine SRD

Suggested Price $3.99

For the benefit of hobbyists and publishers alike, the Quantum Engine SRD provides an editable (DOCX format), art-less version of the Quantum Engine rules used in Cepheus Atom and Barbaric!, all packed into a uniform, simple, and easily editable format.

This package file also includes a very permissive license for using these rules hwile claiming compatibility with the Quantum Engine. All rules included in this package are also Open Content, per the standard Open Game License.

This package also includes high-resolution compatibility logos to mark your own book as compatible with the Quantum Engine.

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Discussions (1)
Customer avatar
John R October 16, 2021 4:56 pm UTC
What's the difference between Cepheus Engine (both space opera, and "sword of cepheus") vs Quantum Engine? I thought Cepheus Atom was just an instance of Cepheus Engine applied to PostApoc (in the same way as "Sword of" is Cepheus Engine applied to Fantasy). And "Cepheus Quantum" then makes it all even more confusing. I feel like I need a guide to all of your 2d6 products and how they fit together and interrelate.
Customer avatar
Omer J October 16, 2021 6:26 pm UTC
Greetings. Here are our rulesets:
- Cepheus Deluxe: full-scale sci-fi ruleset.
- The Sword of Cepheus: full-scale sword & sorcery ruleset.
- Cepheus Quantum: one-sheet (2-page) sci-fi ruleset; the Quantum Engine evolved from it.
- Cepheus Atom: lightweight weird-apocalypse ruleset using the Quantum Engine.
- Barbaric!: lightweight sword & sorcery ruleset using the Quantum Engine.
- Quantum Sorcery: one-sheet (2-page) sword & sorcery ruleset.
- Quantum Engine SRD: all the rules material from Cepheus Quantum, Cepheus, Atom and Barbaric! arranged into one SRD.
Customer avatar
DJ D May 21, 2023 5:49 am UTC
Hello! How does quantum starfarer fit into the mix? Is there one book for all the variations?
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Product Information
Copper seller
File Size:
4.83 MB
Original electronic
Scanned image
These products were created by scanning an original printed edition. Most older books are in scanned image format because original digital layout files never existed or were no longer available from the publisher.

For PDF download editions, each page has been run through Optical Character Recognition (OCR) software to attempt to decipher the printed text. The result of this OCR process is placed invisibly behind the picture of each scanned page, to allow for text searching. However, any text in a given book set on a graphical background or in handwritten fonts would most likely not be picked up by the OCR software, and is therefore not searchable. Also, a few larger books may be resampled to fit into the system, and may not have this searchable text background.

For printed books, we have performed high-resolution scans of an original hardcopy of the book. We essentially digitally re-master the book. Unfortunately, the resulting quality of these books is not as high. It's the problem of making a copy of a copy. The text is fine for reading, but illustration work starts to run dark, pixellating and/or losing shades of grey. Moiré patterns may develop in photos. We mark clearly which print titles come from scanned image books so that you can make an informed purchase decision about the quality of what you will receive.
Original electronic format
These ebooks were created from the original electronic layout files, and therefore are fully text searchable. Also, their file size tends to be smaller than scanned image books. Most newer books are in the original electronic format. Both download and print editions of such books should be high quality.
File Last Updated:
January 13, 2022
This title was added to our catalog on April 14, 2021.