Mechanics¶
Rules system: several; each page below names its own.
Lore: what magic, demons and the other subjects of these rules are in the world is told in the Magic, Cosmology and Creatures sections.
Legacy game-design material from the Terrun archive: magic systems, rune traditions, class drafts, spell lists, demon rules and stat blocks written for earlier rule sets. It is organised here so it is not lost, and it is not canon for play. How anything works at the table is defined by the ARCS rules; material judged worth keeping may be transitioned to ARCS later. The world-description passages of these documents have already been mined into the lore sections, and each page here links the lore page that owns its subject.
Pages are grouped by the rules system they were written for. Each opens with that system and lists its source documents. Tables are lightly cleaned; rules are reproduced as written, not corrected or rebalanced, and where drafts disagree the differences are noted.
| Section | Rules system | Contents |
|---|---|---|
| Sancturi System | Homebrew, the skill-based Sancturi system (2016-2026) | Focus and Spellcraft feats, colleges and realms, rune magic, alchemy and witchcraft, spell paths, Hollowing, constructs |
| d20 Archive | D&D 3.5-based homebrew of the 2014 archive (2013-2016) | Classes, spellcasting, college spell lists, magic items, Mithis metals |
| Demonlands Demon Rules | Homebrew, the Demonlands mini campaign (2025-2026) | Essence, Bond, Essence Contests, hosts and metamorphosis, Aspects, Facets and Techniques, demonic forms |
| Winged Demon Lord Forces | D&D 4th Edition | Eleven demon stat blocks, the only 4e material in the archive |