Lore

Gods:

Most of the major gods will be permanently fixed into the lore.  Minor gods will be generated randomly.  Minor gods will include world dwelling demigods, false gods and powerful creatures worshipped as gods such as dragons.  Appropriate text will be added to conversations when asked about their religion.

Dathida will be the first among the major gods.  Dathida is the god credited with the creation of the world and is associated with chaos and disarray.  It is believed that every hundred thousand years Dathida destroys the world and creates a new world.  It is for this reason that most cultures choose not to worship her.  However she does have a devout following of cultists known as The Arbiters of Chaos.  Prayers to Dathida, if answered, have unpredictable results.

Other gods have taken it upon themselves to influence the world in their own ways.  This counteracts Dathida's chaotic nature and gives the world a semblance of order.  The forces of order, chaos, good and evil are always at odds with eachother and no one side has ever maintained an advantage for very long.

Creatures:

Goblins: Goblins are savage, tribal creatures that tend to inhabit forests.  They dwell in small villages made up of straw huts.  They have no tolerance for outsiders and usually attack on sight.  Most goblins wield simple weapons made of wood or iron.

Goblins tend to worship false gods.  It is not uncommon for one tribe to worship a completely different god than another.  Goblin priests train themselves in rudamentary magic to try to emphasize their god's power.  Unlike the priests of civilized cultures, goblin priests do not focus on holy magic but tend towards dark and elemental magic.

Physically goblins are fairly weak, relying on large numbers to take down their enemies.  They have moderate knowledge of forestry and sometimes resort to stealthy ambushes to attack invaders.

Skeletons, Necromancers and Liches: Many creatures are cursed to have their remains reanimated by a necromancer.  Novice necromancers often make the mistake of trying to reanimate a decaying corpse but this results in a creature that is so encumbered by it's own flesh that it is generally useful only as a decoy when a priest catches the foolish necromancer pilfering their cemetary. 

A seasoned necromancer will either remove the bones from the corpse manually or use a fire spell to burn the flesh away before animating it.  Either way, necromancers are required to devote a certain amount of their dark mana to the corpse while it is animated.

A skeleton's physical strength is comparable to it's living counterpart.  What makes skeletons so formidable is their resistance to most weapons along with dark and elemental damage.  Their speed is also somewhat higher.

Unlike a decaying corpse, a skeleton has none of the drawbacks of mortal flesh.  Slashing and piercing weapons such as swords and spears have little effect on skeletons but bashing weapons such as maces and hammers are excellent at smashing and scattering the bones which is enough to dispel the sorcery that holds them together.

Necromancers often use skeletons to defend their homes or perform menial tasks.  Skeletons found wandering the wilderness or inside dungeons are usually not the work of a necromancer, but a lich.

A lich is an animated necromancer and is the ultimate form that most necromancers strive for.  Unlike skeletons, a lich retains it's identity through the use of an artifact that holds it's soul.  And unlike a necromancer, a lich is powerful enough to maintain dozens of skeletons at a time.  A lich has no fear of death as long as it retains it's artifact.  It will strike without provocation and without mercy.  Only through the destruction of the artifact can you permanently kill a lich.  However some powerful sorcerers and overlords have enthralled a lich by taking it's artifact and keeping it for themselves.

Gameplay Note: Skeleton and Zombie will be a subclass of a creature much like Thief and Sorcerer and will replace any of these classes.  Attributes will remain the same other than increased speed and resistance to slashing, piercing, dark and elemental magic. On a related note, there may also be a possibility that after the player dies the game will continue.