Let's break it down...
WORLD GEN
-Rain shadows would be removed, due to it putting to much strain on the hardware.
-Civilizations would draw borders in a style similar to Civ4, in such a way as there is no disputed territory.
-Unimportant historical figures would always be cut, to help compress the region file.
-Civ territory would be represented as a tile background color. If you ran out of colors, no more Civs would be genned.
-No mountain peaks.
-Revolutions would occasionaly happen, but no-one would have any recollection of them.
-ADVENTURE MODE-
-Adventurers would always start out with crappy armor and weapons, regardless of actual supply.
-Level up!
-Dragons would be overpowered or completely nerfed, despite them not needing nerfing.
-Marrage and scars, and children! Unfortunately, your wife and child are about as useful as drunks are now.
-It is now impossible to carry dead sentients.
-It is now impossible to kill everyone in town.
-It is now impossible to kill quest giving characters.
-Hydras are now cluster organisms.
-Body parts are simplified into arms, legs, torso and head.
-Wounds are much less discriptive.
-Blood is no longer drinkable.
-You cannot vomit.
-Others cannot vomit.
-Humans are peaceful, industrious, and good hearted. All of them. Exept for phineus, you're supposed to hate him.
-Goblins attack on sight.
-Goblins no longer shove your heads on stakes.
-Elves will not eat people, because cannibalism is bad.
-Cue demon boss having weak underbelly. Press A-A-Y to access this point.
-Wearing a goblin cloak makes you a goblin, for all intents and purposes.
-New item qualities! Good, ___, and Bad.
-What? The cyclops isn't a megabeast? Well, put it in!
-The king is bad. All the time, every time.
-Elves use bows. All of them. Not a sword to be seen.
-You are confined to your Civ boundries.
=Dwarf Mode=
-Dwarves have three skill levels. Unskilled, Expert, and Master.
-All moods are fey or secretive.
-Cinnabar is removed.
-Tutorial mode!
-Social skills are condensed.
-Goblins now are leveled to you military, "To provide constant challenge".
-Instead of tantrum spirals, we have revolutions removing you from the throne.
-carp are peaceful fish.
-Dwarves have no problem drinking water, and in fact have negative buffs when they drink alchohol.
-Dwarven names like Urist are replaced by names such as "Gimli" and "Bombur".
-Engravings now feature Cheese, cheese and more cheese. Not much of a change.
-Sieges now can only be turned back by peaceful bargaining.
-Ambushes are removed, because they "aint fair".
-Hunters no longer hunt on premises, and bring back generic "Meat [5]"
-Food must be cooked.
-Disease is abstracted to the point of "Urist has come down with a sickness!"
-Surgeons can no longer mutilate a patient.
-Niether can anyone else.
-Berserskers are no longer part of the game, replaced by the mild "Violent".
-Nobles are unkillable, unhurtable, and the programmers say they are disgusted by previous treatment of the poor barons of the past.
-Toady One will be punted aside like an old football.
-There is no hell.
-For that matter, there is no AAA, Toady didn't enjoy being yesterdays news.
*GRAPHICS*
-tilesets, tilesets, tilesets! tilesets to make Mayday look like a hoax, tilesets to make more money, tilesets to allow the mentally retarded to play the game! More Monies!!! BWAHAHAHAHAHAHAHAH!!!!!
Thus, does the Age of Awesome end...