Archived draft
- Version: v0.12
- Status: Archived development draft
- Current version: One Hero Engine v0.20
- Play status: Unplayed
- Rules status: Original game design
Editorial publication note
This website edition divided the original long One Hero Engine article into shorter pages for easier reading and reference. Those pages are now preserved as the v0.12 archive after the v0.20 mechanical rewrite became the current ruleset.
2026-06-20 consistency pass
- Aligned saving-throw wording across the split rules pages and quick reference.
- Reworked the combat page into one confirmed turn procedure based on the current draft.
- Removed obsolete example abilities that no longer exist in the published v0.12 text.
- Marked unresolved procedures explicitly where the current source does not define them consistently.
- Updated the editable character-sheet template to match the current draft terminology and open rules gaps.
Still unresolved in the current draft
- Starting HP and HP gained by level
- Zero HP, defeat, death, unconsciousness, or withdrawal
- A full Morale subsystem
- A complete Fray eligibility procedure
- A universal spellcasting roll and failed-casting procedure
- A universal concentration procedure
- A complete summoning procedure outside individual spell text
The repository only contains the legacy public character sheet as a PDF binary asset, so that downloadable file remains preserved exactly as part of the v0.12 archive.
Historical changelog
The archived v0.12 material does not include a fuller version-by-version changelog beyond these publication notes.