Cut'n'paste sketch map of known world in my current D&D campaign. ("sketch" as in a "rapidly executed piece of art not intended as a finished work". As in "this isn't a hexmap of the world, I don't need one for all this geography for my current campaign, may make one later"). Click to enlarge...
A-Desert full of old ruins and cryptic Sumerian Lovecraftiana. Anything in any CoC game I run will have an analogue or origin here. Shadows. Tentacled horrors. Runic dweorganisms. Tiamat.
B-Opium-dream Exotic Pseudoasia: start with Yoon-Suin and see where it goes from there. Yak-men, crab-men, mollusk gods. If players keep going east from there there's ninjas and what-all.
C-Arabian Nights country. Thieves, walking demons, dune stalkers. May leave this for Mandy to do when she gets around to running some more games.
D-Githyankified Egypt. Tombs. Nile--as in the band. Khopesh swords. Insect gods. Children of En-Gorath. Curses.
E-Sea full of Sinbad-esque stuff. Harpies. Pirates. Aspidochelone? Rolangian Ettins.
F-Harsh, Chaos-damaged pseudoSlavia with freaky Eastern European fairytale elements. Witches. Ogres. Hobgoblins.
G-Realm of the NegaTsar. (Art in this area by Oleg Denysen.) Nine-headed winter wolves. Clockwork golems. Murderous clocks. Mastodons.
H-Sea of Ignorance and Pain. Scattered cold islands and island-fortresses, including the Oth teratocracy, where my players are now. Cannibal mermaids. Sea serpents. Jellyfish men.
I-Puzzle palace of Tetrus Imperious. Shifting passages. Traps. Confusion. Riddles.
J-Pseudo-Hungary/Romania with Dracula-Bathory war taken from James Raggi's Transylvania 1600 idea. Masked armies. Blood omens. Pikes.
K-Hungarian fairytale forest. Murderous trees. Talking beasts. Straw men.
L-The Reach. Vancian alchemy, lightning wizards, automata, pterodactyls, blue orchids.
M-Fortified megalopolis separating Whitey from the Decadent East. Full of generations of insane crusaders. Relics. Curses. Armor golems. Despair.
N-A green and pleasant land.
O-Goblin Kingdoms. Boschoforms. Carrion crawlers worshipped like gods. Tricks. Inversions.
P-Things are all Pendragon and whatnot here. Enormous roses isolated in the forest. Elegant dragons. Black knights. Whispering snakes.
Q-Fairy land. Possibly via Mandragora. (As drawn by Virginia Sterret and Kay Nielsen.) Pixies, brownies, sprites. Contracts. Magic eggs. Etiquette.
R-River of Unfathomable Despair. (It's just a river.)
S-Some sort of abstracted symbolist zone where there's weird magic effects and a big maze (like in the picture). Indescribable creatures. Queens. Kings. Pages. Knights.
T-Vornheim and environs (everything from here thru Z is on this map and briefly detailed on page 3 of that book I wrote.) Wolves. Crows.
U-Bellet Osc. Lunatics. Black swans. Lich King.
V-As-yet-unnamed half-frozen sea. Crawling with ice raiders in scarves and insect-like wind-masks. White worms. Ice foxes.
W--Nephilidia. Locathath. Algoids. Blind albino piranha.
X-Nornrik: White elves and frost giants.
Y-Deathfrost Mountain. Undead armies.
Z-Last known location of Bluebeard the Pirate. 7 Magic Dwarven pirates.