Generic
Eero Tuovinen’s universal system develops the rules of The Shadow of Yesterday, separating them from that game’s setting to support stories in other genres and worlds.
Directory entry · Arkenstone Publishing / Eero Tuovinen
Third-party modules welcome- Entry type
- Rules engine
- Rules family
- Generic
- Edition
- Solar System
- Rules licence
- CC BY 3.0
01
What is it about?
Solar System adapts the engine Clinton R. Nixon created for The Shadow of Yesterday. Eero Tuovinen presents it as a universal rules framework independent of the original sword-and-sorcery setting. The project provides its game text under an attribution licence to support adaptations and new publications by other creators.
02
At the table
Groups choose their own setting and apply the universal engine. Its rules support stories that can move beyond the fantasy genre of the original game.
For module creators
Publishing modules
Independent sales
You can publish and sell original adventures and settings derived from the Solar System text under Creative Commons Attribution. The publisher expressly encourages development of new settings and material using its rules.
Conditions
Credit the text used and check its notice's version. Some artwork and layout are excluded; contact the publisher for logo files and conditions.
Permission and sources
03
Read the rules
Read the rules Licence sourceLogos and credits
Logos identify the games listed and belong to their respective owners. Inclusion in this directory does not imply affiliation or endorsement.
Solar System
Solar System — Arkenstone Publishing / Eero Tuovinen.
Original logo design, resized for the web.