What's changed? Let's have a look.
Wild Boar (A003) is now a "Ferocious Blah-Boaricus" ...since the former is just as likely to pop over and join the dinner party, whereas the latter is much more likely to regard the lot of you as one hearty meal
Munchkin (A007) is now more accurately identified as a "Misguided Munchkin"
Giant Frog (A011) now recalls the famous quote from 'Giliad's Field Guide to Inedibles, Chewy Foods and Things that will eat you if given the opportunity' ... "Giant Hideous Frog!" (only without the exclamation mark)
Grognard (A014) is now "Wily Grognard" (but only because he kept grumbling on about being left out)
Burrowing Slugglemite (A018) is now "Burrowing Slugglemyte" because 'mite' indicates small and as anyone who has ever faced down a Slugglemyte will tell you, "their breath is enough to make your clothes shrivel up and fall off"
Otig (A025) is now referenced by its more common name of "Odious Otig"
Triceratops (A026) is now "Rogue Triceratops"
Tyrannosaurus (A028) is now "Hungry Tyrannosaurus" which sort of begs the question, by jove don't those things ever get tired of hunting and eating and chasing little jeeps with food in them?
Theosaurus (A030) now gives each player the chance to beat his little challenge... before he EATS you!
Two-Headed Giant (A031) will now reward a good explanation along with punishing those that fail to convince it of your noble intentions. The Persuasion requirement has been slightly modified as well.
Mischievous Fairy (A038) has invented an even more devious method of tormenting you (for fun)
Quicksand (A043) is now "Goopy Gloopy Bubbly Sludge Puddle" following a personal and somewhat harrowing experience deep in the jungles of the Palawan Archipelago
The Fearsome Dragon (A051) chest now contains both Items and Copper Pieces
Traveling Fish Merchant (A063) is now "Mobile Fish Caravan" for reasons that will become clearer when you finally meet her on the road
The Group Roleplaying card Log (A074) is now the suspicious anomaly we've all suspected it to be. Those familiar with this card should take note that there is now a third question in relation to the log.
The Human/Khajathi Roleplaying Card (A080) has been replaced with an entirely new encounter titled simply, "Traveler for Hire" which may harken back to that one game when, having spent so much time in the local jail your character found themselves wholly unable to even hire a companion before setting off.
Turns out it wasn't Elderberry Wine that led to Group of Fierce Goblins (D012) but a rather bad batch of Ogre Mead. Now we finally know why they have so badly miscalculated... oh wait, they always do that.
Burrowing Dooglemite (D013) has been renamed "Ancient Slugglemyte" to better suit its role in the greater Slugglemyte anthropological hierarchy
Group of Skeleton Fighters (D014) is now "Skeleton Fighter Poetry Club." For further explanation please reference 'Undead Poets Society Regulations and Bylaws' Section 8, paragraph 3
Giant Spider (D018) renamed to "Cunning Arachnid" (still giant)
Centipede (D021) is now "Slithering Centipede" because just seeing that thing move about (hebejebe-shivers)
Slime (D025) is now "Villainous Slime" not that it wasn't always so, just that we felt the need to highlight the fact that it possessed such ill intent toward any and all humanoid shaped intruder type...things... namely you, only it lacks the physiological means of articulating such feelings (so now you know).
Mummy (D028) is now "Restless Mummy"
Jabberwotty (D036) still doesn't think you're worthy to pass through his chamber but may be somewhat more impressed should you manage to persuade him. The persuasion requirement has been slightly modified.
Poisonous Cloud (D047) is now "Suffocating Foggy Smog" inspired by rapid, unregulated urban development... and parts of China.
Genie (D059) is now "Genie from Afar" although we definitely don't recommend asking him specifically from where it is he hails since that, according to rumor, is a liiiitle bit of a touchy subject (given what he used to do for a living compared to his current job of guarding underground passageways from snarky, overly ambitious adventuring types). Don't say we didn't warn you.