Size is how much space a creature takes up. It decides what it can hide behind, what can hide behind it, and what it can climb.
There are six ranks. Medium is the baseline — a normal human-sized creature or object.
| Rank | Example |
|---|---|
| Tiny | Radroach, bloatfly |
| Small | Dog, mole rat |
| Medium | Human, ☢ Ghoul — the baseline |
| Large | 💪 Super Mutant |
| Huge | Deathclaw |
| Giant | Behemoth — anything larger than Huge |
Size and Stance
Your stance lowers your effective Size:
| Stance | Effective Size |
|---|---|
| 🧍 Standing | Normal for your creature |
| 💺 Crouched | 1 rank lower |
| Prone | 2 ranks lower |
What Size is used for
Creature Cover
Cover from a body is decided by relative Size, not absolute — see Creature Cover:
Knockdown and Knockback
−2 📊 DC to resist Knockdown and 🔙 Knockback for each Size above Medium: Large −2, Huge −4, Giant −6.
Movement
Climb Over clears an obstacle roughly half your Size.
Not the same as item size
Item Sizes measures how many 🔳 inventory slots an object occupies. That is a separate system that happens to share the word.
Related
- Creature Cover — the relative-Size cover rules
- Stances — 🧍 Standing · 💺 Crouched · Prone
- Cover — cover objects and concealment
- Climb Over — the movement action gated on Size