De'Ru is an earth-sized planet inhabited by three indigenous sentient races, all of which evolved independently of one another.  A large portion of the world consists of a Canyonlands style environment, which is well suited to the De'Rukai, indeed, it is perhaps the determining factor in the course of their evolution. Aside from these large regions, the rest of the planet has the general makeup and biomes of any earthlike world; rainforest, desert, tundra, taiga, etc.
The biology of De'Ru is hexapodal in nature; that is, all indigenous lifeforms, at least in the case of vertebrates, have a six-limbed physiology, as opposed to earth's four-limbed physiology.  All vertebrates encountered upon this world (mammals, reptiles, birds, amphibians, reptomammals,fish.) will possess six limbs (except of course in fish...as fish don't have legs, they have fins).

There are multiple sentient species native to this world, all of them having evolved independently of each other on different areas of the planet.  All of the other races present upon De'Ru migrated there, within the last hundred or so years, through dimensional rifts (which the inhabitants refer to as Rift Storms).  The rifts, for the most part, are random.  A wormhole of sorts, one end opens on De'Ru, while the other appears on another world.  The rifts have a nasty tendency to suck everything in the area in when they open, then close again quickly.  They are predictable, at least a few minutes prior, by the atmospheric changes that occur; thick, purple-black clouds form in a cluster, crawling with lightning, the air heavy and humid; then the clouds split open revealing a swirling tunnel.  A few races have mastered the ability to control these rifts, and used them to purposely travel from their world to De'Ru, for whatever reason.  The rifts have not always been a danger upon De'Ru.  Historians claim to have never encountered them before.  It is hoped that the phenomenon will soon pass.

Below is an approximate map of De'Ru.  Between all the races living upon the world, it has been explored and mapped in its entirety, though no one race has completely explored the globe.  Civilizations of the various races are scattered throughout the continents of De'Ru.  The continents are named, as are the oceans, the names being universal between the races.

The governments of De'Ru vary from one race to the next.  For the most part, each race has a large capitol city-state, though a few of the immigrated races have established nations.  This is largely undisputed by the others, as there are copious amounts of unsettled land upon De'Ru.  The majority race, in any given city-state or nation, will be the race that established it of course, though one is always likely to find other races interspersed.  In the Orc capitol, for example, one is likely to find trolls, ogres, and goblins.  Below is a map with the major City-State/Capitol for each race listed.
Not all races have a City-State or nation. The Shelsaire, for example, do not live in cities. They live in clans, or colonies, that don't tend to grow very large, and in fact rarely even have proper dwellings.  Other races to not exist in large enough numbers to have formed their own city-states.  They either dwell in the city-state of a friendly race, or live in small scattered villages.
"Initial settlement" refers to the first Terran settlement on De'Ru.  It is not yet as large as the other city-states, but is growing steadily.
The only races to have established their own undisputed nation are the Dre'ak (Dineer), the elves (Sidhein) and the dwarves (DeepHome). The spots posted on the map are the capitols of these nations.

The technology level of De'Ru varies from race to race, ranging from nomadic hunter-gatherer, to Viking feudal, to medieval, to steam power.

Each race has its own religion, and its own gods, however there is only one set of gods for De'Ru, and their presence is felt often upon the world.  Their names differ from race to race, as does their importance, and in some cases even their existence.  Information on each race's religious beliefs can be found with their other race info in the People of De'Ru section, however, a list of the true names of the Gods, and what they represent, follows:

Dalista, Head goddess. Hope, goodness, redemption, justice, weather.
Salu, goddess of healing, renewal, life.
Ibhor, god of battle, honor, war.
Ythele, goddess of wisdom, time.
Hylishilva, goddess of nature, forests and animal life.
Nymastyrr, goddess of the moon, fertility, love.
Inadhea, goddess of trickery, illusion, riddles.
Pumilius, god of technology, architecture, progress.
Dauneth, god of music, art, revelry
Ythreyai, god of commerce, agriculture
Alledryn, the god of magic, magical creatures.
Hethrak, the god of neutrality, balance, peace.
Hithyrea, god of fire, volcanoes.
Othodre, goddess of earth, mountains
Fitias, goddess of water, rivers, the sea.
Aya-loa, god of air, wind, clouds.
Nufeir, God of darkness, evil, shadows.

The economy of De'Ru is primarily a barter system, however, this varies from one city-state or nation to the next.  Where a barter system is not present, the economy is one of coins, precious metals.