There is a massive variety in creatures and critters, including their sizes. Creature size is expressed as a number, with 0 being the very tiniest creatures and 10 representing an average human.
When a creature’s size increases or decreases for whatever reason, apply the following adjustments. A creature’s Attributes can never go below 1 as a result of size changes.
Increasing size by 1: +1 Physical Strength, +1 Physical Fortitude
Decreasing size by 1: -1 Physical Strength, -1 Physical Fortitude
A creature’s weight is approximately (Size + Physical Strength + Physical Fortitude) x 5 in kg. So a human (Size 10) with Physical Strength 3 and Physical Fortitude 4 would weigh (10 + 3 + 4) x 5 which is 85 kgs.
Creature size also affects combat, as detailed in the next section.