FATAL already has enough tables that lead to other 1d1000 tables that lead to other 1d10000 tables that lead to nowhere. I will admit that I used some ideas from the game for my own homebrew stuff, but only the general idea and never at face value. The closest one that you can almost use as-is if you change some of the autistic stats that are being affected is the Anakim traits table.
The Anakim are half-demons and as such their demonic heritage manifests in different ways, so you roll a 1d10 to see how many demonic traits you get and a 1d100 for the trait table itself. Most of them range from the mundane - the character can cast a basic spell once a day without preparation, just get a flat 50% damage reduction because their skin is abnormally hard, or they have demonic features which make them uglier. Then you have some which can have interesting applications - for example the character casts no shadow, the character leaves no footprints, the character has completely white eyes so you can never tell where they are looking, the character must eat inordinate amounts of food not to starve to death, the character flies into a rage if someone insults them which leads to a forced battle. Then you have traits which are just Classic FATAL - the character always smells like shit, the character can cast a spell which forces another to have sex with them, the character has to eat a dead person's penis/vagina once a week or die, the character causes every human to crave anal sex, the character has farts so loud it can kill living beings by being so loud it causes their heads to explode, the character always attacks a member of a certain sex or race unless they pass a drive check.
Maybe some other earlier systems had them, but I didn't know of them at the time, FATAL was one of the first systems that I downloaded not to play it but to see what everyone was gawking at. The worst part about it is that you'd think the reviews are being hyperbolic, but then when you actually read it it's much, MUCH worse.
Seriously, while RaHoWa is objectively worse, it's at least less than 20 pages, FATAL has more than a whopping 900 pages of pure unadulterated autism with mechanics as riveting as having to roll to piss properly (including a pissing skill!) or them actually expecting that your character's class would be determined by a roll... which isn't unheard of, but then they seriously expected all the classes they listed to be player character classes, so in addition to your standard RPG classes such as rogue, soldier, druid, mage, you may also end up playing classes such as baker, goatherder or prostitute.
Both of these are terrible but I can think of something worse: Black Tokyo, it combine fucked up fetish crap with racism, it has multiple books (not far from 10 or maybe even more that) and behold a description of it's highest tier monster: "Chris A. Fields posted:
Shingami (CR 25)
Beyond Colossal Giant
Init -4; Senses Darkvision 60 ft
Aura Radioactive Hell (heavily irritated area 150 ft)
Languages Mindlessly repeats circa WWII anti-Japanese catch phrases
Defense 27, touch 2, flat-footed 27(-8 size, +25 natural)
hp 30d8+300 (435 hp); DR Damage Resistance 10/good
Fast Healing 3 Spell Resistance 22
Immune Acid, Fire, Radiation, Suffocation, Drowning, Vacuum, Massive Damage, Ability Score damage/drain, Energy Drain, Negative Levels
Resist Electricity 20,
Speed 100 ft (cannot run or shift)
Melee +49 melee slam (4d6+26 bludgeoning plus 4d6 fire, 18-20/x2)
Melee Space 500 ft x 500 ft.; Reach 150 ft
Base Atk +23; Grapple +65
Atk Options Squirming Cock Rush +49 melee (hits up to 3 enemies within 30 ft of each other), (4d6+26 bludgeoning and 1d6 fire) or
Slam +49 melee (4d6+26 bludgeoning plus 4d6 fire, 18-20/x2) or
Fling +23 melee (thrown 500 ft straight up or any direction, falling damage 20d6 REF DC 60 halves)
Horrific Orgasm (20d10 acid, 500 ft cone, REF DC 28 half, once every 3d6 rounds)
Abilities STR 52 DEX 3 CON 31 INT 3 WIS 15 CHA 9
+26 -4 +10 -4 +2 -1
SQ Eventual Return
Feats Power Attack, Cleave, Great Cleave, Improved Sunder
The Shingami is the ‘western god of death’, a colossal psychic monster created from the hate and bigotry of an entire nation. Born during World War II, the Shingami is the living embodiment of American sin- the loathsome spirit that put Japanese-Americans into camps, and the same rage that burnt the world at Hiroshima and Nagasaki. Like the Genbu, the colossal Shingami has slept through the decades, somewhere deep beneath the Sea of Othosk. Coral has grown over the monster’s resting place, and every day cargo ships drift lazily by above. For most, the Shingami is long forgotten. Only a handful of Japanese arcanists serving with Police Section Seven believe the monster still lives and even fewer have a plan to destroy the great beast if it should ever reawaken.
The Shingami stands taller than most of Tokyo’s sky scrapers, and it’s sheer mass shakes the ground with every step it takes. The monster resembles a gigantic ebony ape with dozens of jagged horns nearly half a kilometer long protruding from its spine and the crown of its head. The Shingami’s sickly yellow and black face is like something out of a WWII propaganda poster- a slant eyed, bucktoothed, leering parody of a Japanese man’s. Dozens of penis tendrils, each the size of subway trains whip, from beneath the creature’s bulging gut. The Shingami’s eyes glow a bloody crimson, and its light is strong enough to blot out the sun. From head to hooves, the monster is wreathed in atomic flames.
Radioactive Hell (SU) : The Shingami laughed at the atomic end of World War II, relishing the destruction. It is a creature of elemental atomic fire. A 150 ft radius around the behemoth is considered heavily irradiated and remains so for 1d6 minutes after the Shingami passes.
Squirming Cock Rush (EX) : The Shingami’s enormous prehensile cocks strike up to three enemies which must be within 30 ft of one another with every attack. Make one attack roll for all adversaries, and this is considered a single attack. All enemies struck by the behemoth’s cock suffer the same amount of damage.
Fling (EX) : If the clumsy Shingami can get hold of a Huge or smaller target, it can toss the target up to 500 ft in any direction it chooses. If attacking a Medium or smaller target, it may scoop up two adjacent Medium sized enemies with a single attack roll. It really, really likes doing this.
Horrific Orgasm (SU) : As often as once every 3d6 rounds, the Shingami can ejaculate waves upon waves of acidic greenish-grey semen from every one of its dozen cocks. Bits of the corpses it has created rush out mixed with the acidic spray.
As a full round action, the Shingami unleashes a 500 ft cone of acid which inflicts 20d10 points of acid damage to everything within the blast radius. Characters caught within the spray may attempt a DC 28 REF Save for half damage.
Eventual Return (EX) : The Shingami is nearly impossible to ever truly destroy. It can only be permanently slain if a character of American nationality voluntarily chooses to sacrifice themselves to the task. The creature must first be brought to negative HP equal to its maximum positive HP total, and the American sacrifice must immolate him or herself atop the gigantic corpse. Otherwise, the slain behemoth will return to life in 4d6 months, or upon the next Akashita Wind storm."
Yeah I don't remember Fatal or Rahowa being on this level of "WHY?" and there's so much more awful shit in that setting. Edit: I should continue the Black Tokyo thread from where it has stopped, people really don't know yet how it truly is a solid candidate for worse tabletop rpg ever, I just would need someone to alternate posts with