| Term | Meaning |
|---|---|
| Advantage / Disadvantage | Roll two d20s and keep the higher / lower. |
| AI Favor | A point you spend to reroll a d20 once per Check. |
| Buff / Debuff | A temporary benefit or penalty, such as Stunned or Burned. |
| Check | A d20 roll plus modifiers against a Difficulty. |
| Crawler | A person (or animal) who entered the World Dungeon. That’s you. |
| Crawler number | Your unique, first-come number in the dungeon. |
| Difficulty | The number a Check must meet or beat. Starts at 10 and rises with the Floor. |
| Evade | An Interrupt Action to avoid attacks. Adds your Dex. |
| Floor | A level of the World Dungeon. Floors 1 and 2 are the Tutorial Floors. |
| Health Bar (HB) | Ten slots that track your Health, each holding your Con Mod. |
| Interrupt | An Action you can take when it isn’t your turn, like Evade or Intervene. |
| Intervene | Help another crawler after a Near Miss, adding 1d6 to their roll. |
| Mob | Any monster or enemy. Bosses and Elites are tougher Mobs. |
| Move / Step | Move 20 feet with a Move Action; Step 10 feet with any Action. |
| Near Miss | Failing a Check by only 1–2. |
| Neighborhood | A themed area of a Floor with its own Mobs, quests and Boss. |
| Party | Crawlers who entered together; they share experience and see each other on their maps. |
| Saferoom | A rest stop where Mobs can’t attack and crawlers can heal. |
| Skill Rank | How trained you are in a Skill; added to Checks with that Skill. |
| Stat Mod | The modifier from a Stat score that you add to Checks. |
| System AI | The voice running the dungeon. At your table, that’s the GM. |
Definitions summarized from the official books.