There are several key words that describe the sizes of objects, creatures, bending moves, and distances. Sometimes these terms are used in normal speech, so whenever text on this wiki refers to official size categories, it should have a link to this page.

Fine
Fine objects should small enough that distinguishing a single instance of the object would be difficult. A plethora of fine objects fits in one hex-grid.
Projectiles: None.
Creatures: Insects
Objects: Sand

Diminutive
Small and very tiny, usually smaller than normal for it's size. Many diminutive creatures can share the same hex grid.
Projectiles: Pebbles, small pellets.
Creatures: Dwarf Mouse, Butterfly, Minnow.

Tiny
Tiny objects are quite small, and should never be large enough so as not to be held easily in the hand.
Projectiles: Small rocks, bullets, bolts.
Creatures: Dragonfly, Sparrow, Frog, Mouse.

Small
Small objects must be held with two hands, and are anything larger than Tiny, up to anything the size of a beach ball. Several small objects or creatures can occupy the same hex.
Projectiles: Small boulder, Cannon Ball, Arrow
Creatures: Cat, Fox, PenguinSeal, Dog
Objects: Radio, Helmet, Wheel

Medium
Medium objects are roughly the size of a human being, and occupy one hex.
Projectiles: Boulder, Crate of Cabbages, 50 Liters of water
Creatures: Human, Leopard
Objects: A crate, a door, a bale of hay (shoulder high)

Large
Large objects and creatures are significantly larger than a human being, and occupy two or three hexes depending on the size.
Projectiles: Large boulders
Creatures: Polarbeardog, Shirshu, Komodo Rhino
Objects: A boat, a wagon

Huge
Huge objects and creatures are two to three times larger than a large creature, and occupy 7 hexes.
Projectiles: none
Creatures: Badger Moles
Objects: Giant tree,

Colossal
Colossal objects and creatures are anything that is larger than a huge creature and the amount of hexes they occupy varies but can be several times larger than a Huge creature.
Projectiles: none
Creatures: Lion Turtle