As seen here: https://glass-candles.blogspot.com/2024/09/glogtober-24.html
Challenge courtesy of TheFirstGokun: https://spiceomancy.blogspot.com/
This is a broad strokes type of generator. If you want floor plans and explicit loot and whatnot look elsewhere.
Get a bunch of dice. Roll 'em and stack 'em, writing down what numbers you rolled for whichever sorts of dice. Do this until the stack falls over or you knock it over, then take the sum of the numbers facing up. The first set of numbers is what each floor is. The second number is what caused the tower to be ruined.
D4
1. Astrological observatory
2. Trebuchet platform, loaded with gu pots (gu - also called kodoku - place many poisonous animals in a pot so they eat each other and concentrate the poison into a potent curse)
3. Lightning rod, lightning-bottling device
4. Emergency escape pod - detaches, inflates, floats away
If you are able to stack a die on top of a D4 you will receive no prize but I will be impressed.
D6
1. Washing tubs and drying lines
2. Pantry with horrid pickled delicacies
3. Micro-bathhouse, Roman-esque with warm pool, hot pool, sauna, cold pool, etc.
4. Musty library & study
5. Smoking room - all furniture made from taxidermied cats
6. Bedroom, fleshblob concubine bound to bed
D8
1. Lecture auditorium for visiting students
2. Haruspexy chamber, miserable caged animals, sacrificial altar, and many oddly-shaped knives
3. Nest of a giant pelican with the top half of its head carved off - it can be flown about by pouring mashed fish down its throat, sitting in its pouch, and steering by pulling its tongue
4. Scrying room with crystal ball and a variety of mounted lenses
5. Chattering skulls on shelves, repeating the words of their bone-memory
6. Full of painted dividers painted with tarot cards, ask them a question and the room will rearrange itself accordingly
7. Portal to dungeon
8. Dovecote, messenger pigeon roosts
D10
1. Squid ink-milking pool
2. Eyes suspended in netting, blue glass bowls beneath collecting their tears
3. Quivering tapestry of bird-flesh plucked for quills
4. Glowing crystals growing out of pile of obese, headless bodies
5. Greenhouse for mystical herbs
6. Whale suspended from pipes, slowly drained of fat which dribbles into tallow candles
7. Mushrooms sprouting on log-beds
8. Bed of oysters in blood instead of water, incubating scarlet pearls
9. Desiccated pixies in jars like upside-down saltshakers, rattling on the ends of chimes as holes let the wind through to jostle them and get their dust out
10. Dryad with tree planted in great clay pot lit by mirrors - flayed for finest paper
D12
1. Ancient gate, obviously moved from elsewhere and apparently leading nowhere
2. Hall of mirrors populated by living illusions, seemingly bigger on the inside than it is on the outside but this is just several more clever illusions
3. Vault warded against all manner of interference mundane and magical
4. Music hall with animated instruments
5. Shrine to tutelary deities
6. Sculpture garden with veiled medusa head on pedestal, kept alive with alchemic syringes
7. Leeching apparatus - uses aquarium of crimson coral and gelatinous symbiotes to filter impurities from user's blood
8. Hovering magnetic black stone
9. Alchemy lab
10. Golden pentagram with bound angel within
11. Whole room is a puzzle box which must be solved to leave - sub-standard solutions may lead to destinations other than the tower
12. Hall of esoteric anatomical models
D20
1. Entire castle on the scale of a dollhouse, richly-attired dolls within
2. Brewing still
3. Unnervingly empty and spotlessly white
4. Scrimshaw studio
5. Private prison
6. Room-sized game board with human-sized gaming pieces
7. Lounge with a hookah and silk pillows
8. Printing press
9. Personal mausoleum
10. Full of clocks with uncommon numerals and timescales
11. Lighthouse lantern
12. Wizard armoury
13. Memento room, memorial to lost love
14. Nursery for infants both human and beastly
15. Room of braziers and dangling censers with cabinets of various incenses
16. Indoor fountain and piranha pond
17. Racing track and stable of micro-horses
18. Dining room
19. Closets full of wigs, masks, clothes, and makeup
20. Meditation room ringed with candles and occult diagrams
I'm not going to do a table for D100s. Do that on your own time if you want it.
What Terrible Fate Befell This Wizard Tower? (D100):
1. Instant total vitrification, surrounded by broken shards
2. Black Plague, crawling with rats and fleas and even the stones have buboes
3. Fallen into sinkhole, taken over by eyeless albino troglo-men
4. Auto-cannibalism curse
5. Doppelganger killed & impersonating wizard
6. Enshrouded by poisonous miasma
7. Eldritch tome absorbed wizard into bibliomanic nightmare pocket realm
8. Infused with mutagenic radiance
9. Patrolled by intelligent killing wind from the upper air that rips the breath from your lungs
10. Infestation by lifeform that as a larva is an idea but when it matures it hatches out of your head as a physical thing
11. Haunted by resentful ghost apprentices
12. Contaminated groundwater with necrotic energy, skeletons on rampage
13. Failed lichdom ritual, now the whole tower eats souls
14. Stalked by dullahan that rides people down and drags them off to hell
15. If you fall asleep in or near the tower you become trapped in the same never-ending dream
16. A troupe of clowns has moved in but they are not clowns they are amorphous and predatory and a dozen of them can be stuffed into a cabinet
17. Gremlins moved in and have set up many Rube Goldbergian instruments of death
18. Everyone has melted into oozes
19. Tentacles reached out of portals and impaled everyone
20. Curse-plague of voracious locusts
21. Suffused with unnatural cold, everything living in wide radius frozen solid
22. There's a giant arm that comes out of the sky around it and attempts to seize you if you spend too much time out in the open
23. Mindflayer brain-raid
24. Terminal human-orbulation
25. Trans-temporally possessed by dinosaurs
26. Encompassed by sharknado
27. Blasted by divine wrath, organic matter turned to salt
28. Genie wish gone wrong
29.
Craniotomic field, brains within area slowly leak out of the heads that hold them as pink gas
30. Blood-borne rage virus splattered on everything
31. Halfway-damned, populated by demons
32. Giant man-eating mollusc using it as shell
33. People transmuted into gold, but very, very thin gold that collapses into negligible dust when touched
34. Flesh turned halfway to stone, stone turned halfway to flesh
35. Chaotic gravitational flux
36. Breach into parallel universe populated by gourds that farm men
37. Tower awakened to malefic intelligence
38. Band of elves practicing torture-arts
39. Swathed by pall of unnatural darkness within which grues lurk
40. Big invisible spiders whose webs are also invisible
41. Caught in time loop, relives fiery disaster every night
42. Wizard rival assassination, many magical traps laid within
43. Devil came to collect on soul sold for magic power
44. Bread infected with sordico turned everyone who ate it into crazed cannibals
45. Devolutionary burst turned wizard into pre-sapient synapsid
46. Invaded by stirge hive
47. Hair grows much too fast within it and it takes all your nutrients and clogs things up
48. Flooded with parasitic worms
49. Undermined and infiltrated by giant ants
50. Flying gemstone wanders about it firing petrification rays
51. Seized by tax collectors and their enforcers
52. Mob of angry peasants with torches & pitchforks
53. Brigands moved in and are using it as a hideout
54. Derro madness-broadcast ruined wizard's mind with paranoid conspiracizing
55. Spontaneous exploding eye syndrome, transmitted by looking into contaminated mirrors
56. Starved to death arguing with extremely annoying imp
57. Extra-dimensional mouths float around munching on things
58. Soaked in blood, wizard transformed into mass of over-productive marrow
59. Wand backfired, blew out the wizard's left side and half the floor they were on
60. Charm gone wrong, all fall in jealous, murderous love with the tower
61. Furious horn-harvested unicorn tracked wizard down and trampled them
62. Resentful familiar murdered wizard and took over tower
63. Wizard's soul stolen by oneiric angler while astral traveling
64. Wizard became obsessed with forging themself into magic sword, partially succeeded
65. Black lotus powder addiction ruined the wizard physically and financially
66. Teleportation accident cubed the wizard and scattered their cubic chunks all about
67. Wizard became possessed by a rogue spell, their own soul trapped in their spellbook
68. Golem went on rampage and smushed wizard, still rampaging
69. Wizard eaten by pet python
70. An ogre magus bashed in the wizard's head and is raiding their collection of tomes and magic items
71. Indefinitely incarcerated in stasis-prison by modrons for Order violations
72. Overgrown by yellow musk creeper plants
73. Mangled by warped space-time
74. Flock of harpies took over, are using it as roost
75. Wizard maddened and mutilated by pack of wolves from space that can run on moonbeams and have frozen mercury teeth
76. The wizard was left a burnt-out husk by attempting to channel eldritch powers
77. The wizard by strangled by a mummy they bought off some tomb raiders to make it into medicine
78. The wizard was lobotomized by mage-poachers looking to make a drug from their cerebro-spinal fluid and left a drooling wreck
79. The wizard tricked Death into a chess game but the chessboard was a hyper-dimensional object and continuously unfolds to make the game more complicated to prolong it indefinitely so Death got pissed and keeps layering on injuries and conditions that should kill the wizard but never will
80. Criminal gang the wizard was indebted to decided to collect, have busted the wizard's knees and are making the wizard teach them magic
81. Alchemically-altered bedbugs drove them insane with itchiness
82. An attempt at creating a potion of eternal life instead mutated the wizard into the degenerate far-future form of humanity
83. The wizard's tongue and hands absorbed too much energy from performing the somatic and verbal components of spells, detached themselves and swelled up into undead abominations
84. The wizard discovered a planar realm they believed was a paradise, and traveled there only to discover it was a hungry lure like a honeydew on a cosmic level
85. Enfilthened by goblins
86. The wizard's mind was trapped in the body of a rabid baboon
87. The wizard was taken over by a cursed mask, compelled to carve an army of its kind
88. The wizard cloned themself but the clones couldn't stand each other and all died murdering each other
89. Beset by a family of mimics
90. Blood magic rite went awry, exsanguinated the wizard and turned them into a bestial vampire
91. The wizard was entrapped by a cursed map, and died of dehydration wandering around their own tower searching for hidden treasure
92. The wizard was slain by a granfalgroo
93. The wizard got drunk and turned themself inside-out for a laugh but couldn't turn themself rightside-in afterwards
94. The wizard attempted a self-enlargement spell but suffocated under their own weight
95. Circle of mages the wizard stole lore from worked together to weave fate worse than death for the wizard
96. The wizard acquired a staff which once belonged to another wizard, and was haunted by their ghost - the living wizard and the dead wizard contended with each other over the staff and the body and both lost, becoming trapped in a miserable state between life and death
97. The wizard and some chunks of their tower were snatched away by a roc whose egg the wizard had eaten
98. A party of maenads the wizard was hosting got pissed and sparagmos'd them
99. A witch mated with the wizard then ate their head to birth monstrous spawn
100. Dragon has taken it as lair