- Tiny (bat-sized)
- Little (spriggan-sized)
- Small (kobold-sized)
- Medium (human-sized)
- Large (ogre-sized)
- Big (yaktaur-sized)
- Giant (giant/dragon-sized)
Player size mostly affects which weapons and armour can be used, how bad the penalties are for using shields, and how evasive you are. Less dramatically, it also affects your odds of falling down shafts accidentally, being pushed around by monsters with trample attacks, and being grappled by monsters with constriction attacks. While monsters also use these sizes, it is best to treat them separately as player species tend to differ a little from monster species of the same kind.
- Deep dwarf
- Deep elf
- Hill orc
- Vine Stalker
Along with the item restrictions medium species face, small characters cannot use the following: bardiches, battleaxes, dire flails, executioner's axes, glaives, great maces, great swords, halberds, tower shields, longbows, scythes, triple swords, or javelins. Furthermore, broad axes, double swords, magical staves, tridents, and demon tridents are treated as two-handed weapons, and all shield penalties are harder to overcome.
Two player species are small:
Pig Form makes players small-sized, but disables most types of equipment.
Little players cannot wield anything that small players cannot, and are also prevented from wearing the following:
- Any body armour but robes, troll leather armour, or any kind of dragon armour
- Any gloves
- Any boots
- Kite shields
Two player species are little:
No playable species are small enough to qualify as tiny, but there are several forms that shrink characters down that small. This grants them a considerable boost to evasion but often inflicts significant drawbacks (not least of which is the inability to use most equipment).
The hybrid races have large-sized bodies but medium-sized torsos, and may wear anything medium-sized characters wear except for boots. Instead, they may wear their species' bardings. Their larger-than-average mass lets them carry shields more easily, but their unusual frames cause body armour to grant half the normal base AC bonus. Additionally, they don't fumble when attacking while wading through shallow water (though they still get the normal movement penalties).
Large species are subject to all the same armour restrictions as little species, except that they can use kite shields and tower shields but can't use bucklers. However, they can use any weapon they find, including giant clubs, giant spiked clubs, and large rocks, some of the most devastating weapons in the game. Like hybrids, they have an easier time wielding shields than medium or smaller races, and they can use melee attacks with no penalty when in shallow water.
Players in Ice Form are also considered large, but cannot make use of any equipment.
No species are considered big, but Hydra Form temporarily increases your size to big, with all the advantages and disadvantages that entails.
There are no giant races, but Dragon Form will make you this size.
Giant creatures have a quality known as "fake amphibious": they can move through deep water without drowning. (They are tall enough that their heads stay above water.) Unlike creatures that are truly amphibious or native to water, they get penalties to fighting when standing in deep water. They are also too large to be trapped in throwing nets or webs (and will in fact destroy any webs they pass through).