Use Markdown heading levels consistently.
# Chapter N: Titlefor chapter files.## Section Titlefor major sections within a chapter.### Subsection Titlefor subsections.#### Minor Titlefor short callouts or lists. Headings use Title Case and never end with a period.
Use lowercase d and a clear, consistent pattern.
- Standard rolls:
NdS(example:2d10,1d6). - Modifiers: add spaces around operators (example:
2d10 + 2). - Keep rules: write as
3d10 (keep highest 2)or3d10 (keep lowest 2). - Story Die: refer to it explicitly as “Story Die (red d10)” the first time in a section.
Procedures are bulleted lists using *.
- Start each step with an imperative verb.
- One action per bullet.
- If a step is conditional, start with “If …”.
- Keep wording concise and in present tense.
Use Markdown pipe tables with a header row and alignment line.
- Left-align text columns with
:---. - Right-align numeric columns with
---:. - Include units in headers (example:
Cost (CP)). - Use dice notation in headers where applicable (example:
d10).
Every example must be complete and reproducible.
- Include the inputs (attributes, skill modifier, bonuses, penalties).
- Show the exact dice results and the math.
- State the final tier/outcome explicitly.
- Use the label
**Example: Title**at the start of the example block.
Use these terms exactly and consistently throughout the rulebook.
- Rimworld: The frontier planet setting where the game takes place.
- RimWorld: The video game that inspired this TTRPG.
- Storyteller (ST): The GM role that runs the world and adversaries.
- Colonist: A player character.
- Lifepath: The character creation system of childhoods and careers.
- Attribute: One of Vigor, Dexterity, Mind, or Spirit.
- Skill Points: Raw points in a skill.
- Skill Modifier:
Floor(Skill Points / 10). - Colonist Roll: Base Die + Story Die + Attribute + Skill Modifier.
- Base Die: The non-story d10 in a Colonist Roll.
- Story Die: The red d10 that creates twists or complications.
- Tier of Success: The result band (Struggle, Success, Triumph).
- Struggle: Tier 1 success with a major cost.
- Success: Tier 2 standard success.
- Triumph: Tier 3 critical success.
- Edge: A minor advantage, usually +2.
- Bane: A minor disadvantage, usually -2.
- Augmented: Major advantage; roll
3d10 (keep highest 2). - Impaired: Major disadvantage; roll
3d10 (keep lowest 2). - Inspiration Point: A point spent to reroll, add a die, or avert a break.
- Twist of Fate: Positive Story Die effect on a 1.
- Complication: Negative Story Die effect on a 10.
- Need: Core survival requirement (Food, Rest, Recreation, Beauty, Comfort).
- Stress: Accumulated pressure from unmet needs and events.
- Mental Break: A consequence of high Stress.
- Quadrum: One of four 15-day seasons.
- Range Band: Melee, Close, Medium, or Far.
- Trait: A defining advantage or drawback.
- Work Priority: A colony task assignment category.
- Tech Level: The tier of technological advancement for items.
- Crafting Points (CP): The work cost used for crafting and construction.