New ISBI rules! What fun!


It’s the first anniversary of Absolutely Cuckoo and I intend to celebrate with new rules, because I know how to party. Before you get your bloomers in a twist over the fact that I didn’t write the original rules in the first place, these are unofficial and mainly for me, but if you like them, feel free to use them and if you want to give me credit,


and I did not come 2 funk around. I had valuable help from the lovely Sunny. Questions and suggestions are always welcome. You can find the rules in the “About” section later on.

Shall we begin?

The controllable sim will be referred to as the heir and the non-controllable sims as idiots.

Short version for beginners

You move your insane founder to an empty lot and build from there, or choose a readymade starter. Your founder is the only sim you control, until the heir takes over on their birthday to YA.

Each generation has to have at least two births, and every third generation (gen 3, 6 and 9) are fertility treatment generations where both heir and spouse take the fertility treatment. Male pregnancy mod or adoption is allowed for gay couples. Every child must have an idiot trait as soon as you’re able to choose. There’s a bonus for randomizing the other traits & LTW. No choosing LTW before they turn YA! The heir is either chosen by “born dumb” rule, or by your preference or vote.

Supernatural founder/spouse is only allowed if you use a mod to make their life span normal human.

Your sims make their money solely from heir’s and spouse’s jobs & investments (optional). No selling anything! Only heir & spouse and previous heir and spouse can work, no one else in the household.

Your spouse can only work in a rabbithole (you may change their job when they move in). You can’t change the spouse’s lifetime wish or traits. On their first day as elders, you may retire them if you wish, but if they don’t retire on that very day, that ship has sailed.

You may lock in wishes for idiots if there’s a chance they can fulfill them on their own. You can’t make your founder actively skill them in any way – not toddlers either, except the three basic skills.

There’s one free action for every life stage. They don’t stack, so if you forget about it it’s lost. If you choose a social interaction, “visit” and “introduce” is free but after that you can only use one controlled interaction, not a series of flirty interactions for example.

Keep track of fails and wins with the score list further down on this page.

If you choose to have pets, they can either be a part of the ISBI or not. There’s a score list for pets as well. Personally I would never bother, but at least now you have options!

Long version for seasoned players (and beginners who care about details)

The original rules for TS3 were written when Ambitions was a new expansion pack. This is a challenge older than sleeping bags! It is packed with loop holes, especially if you’re going after those elusive points for maxed skills. Instead of reading all the details you could also just ban all cheaty items and stop interfering. Easy enough.

But that would be way too simple, so let’s make it long!


Instead of Insane, you may use the traits Absent-minded, Inappropriate, Childish or Unstable without hospital fix. (You may not use Evil, because it isn’t nearly as challenging. You can make an evil idiot challenge with double mandatory traits, if that’s your thing.) We can all agree that the insane idles get old pretty fast, and absent-minded is a dumber trait than insane anyway. Try the Insane converse mod for a more challenging and funnier insanity.

Spares can now stay for as long as you like, and anyone can move into the household! The more the merrier! Live-ins can’t work and you can’t use their happiness points or count their maxed skills, they are just there to clog the toilets. Have at least two free spots during pregnancy and three spots after fertility treatment. Once moved out they can never move back in again.

Beds can be assigned once per sim and bed.

You may ask idiots to join in a non-skill building activity, as long as they’re in the green and just standing around. Use sparingly and don’t abuse it. I made this rule primarily for better screenshots.

You can now push idiots to any lot without the company of the heir. However, they can’t “visit” (since it requires ringing the door bell) and they can’t be pushed into rabbitholes alone. If there’s a wish involved they have to take the heir with them to be able to fulfill it (“wants to visit a park” for example). Otherwise it would be too easy.

Opportunities that don’t require sending your idiot into a rabbit hole or to talk to someone are OK to accept. For children and teens there are two: schoolyard chums and get on the honor roll. For adults there’s mainly the celebrity opportunities, and it’s almost always work outs. If your idiots work out 100 % on their own I think they deserve a bonus.

Flavour at work or school: you may choose from the fun and social flavours, not skilling, do homework or work hard. Workaholics choose work hard per default and that over-rides your flavour.

The electromagnetic super hamper mod, double size (no bigger), is allowed because insane sims change clothes a serious amount of times daily. Use only one super hamper.

Phone: The heir may call for pizza, police and fire department (if she/he is around during the burglary/fire – otherwise not!). There’s a penalty for stove & grill fires either you call the fire department or not. You may also call a baby sitter during work hours only, if no one else is home.

You may push kids to school early to trick snow day, because snow days suck.


Opportunities that require sending your idiot into a rabbit hole or to talk to someone. If you click yes by accident and later realize you have to send your idiot somewhere to finish, you have to cancel the opportunity.

Lifetime rewards: Moodlet manager, motive mobile, steel bladder, hardly hungry, dirt defiant, immune to cold & heat, change lifetime wish (for spouses).

You may not ask idiots “to join” in a skill-building activity. You may not train or tutor them. You may not in any way encourage or tell idiots to skill or do homework. All skilling must, apart from the free action, be 100 % on free will.

You may not tell kids to go to bed.

You may not change your idiots’ outfits with MC just because they don’t fit the event or weather. Changing outfits for prom, photos & wedding is OK.

You may not use the same skilling as a free action more than once in an idiot’s life.

No travelling unless your heir has a LTW to travel. No uni unless your sim is only going there to slack and find a spouse. Minimal or no skilling away from your home world.

Skilling items (certain store items and modded items) that attract all sims, regardless of traits, aren’t allowed. If they line up to use it daily, it’s probably too much fun.

The walker, the baby swing, the changing table and the playpen are off limits. The baby monitor is only allowed during the burrito stage and must be placed in every room where an adult sleeps, if you use it at all.

The all-in-one bathroom is only allowed for parties and must be deleted afterwards.

You may not hire, buy, program or move in any type of help with babies (outside of work hours), cleaning, repairing or cooking.

Adults cannot carry sleeping bags unless they are travelling. Children and teens can carry them, but there’s a penalty for sleeping outside in the rain and for getting a moodlet colder than “getting chilly” or warmer than “getting warm”.


The new and improved counting of points!

Self wettings – 5 (also for potty trained toddler!)

Passing out – 5

Eating a whole plate of spoiled food -5

Leaving toddler away from home (so the on call babysitter comes) – 5

Not fully skilled toddler in fertility treatment generation – 5 (each)

Fire on stove or grill – 5

Leave an infant in the snow (even for birthday): – 5

Sleep outside in snow, rain, or hail, or getting a moodlet colder than “getting chilly” or warmer than “getting warm” while sleeping outside – 5

Be deep frozen – 10 (and yes, that’s -15 if they started out sleeping)

For each sim failing school – 20

Demotion -20

Getting fired -30

Accidental Death, except meteor strike (since, in all fairness, even a genius would die if a meteorite landed on their head)  – 50 (even if spared or resurrected by Grim)

Social Worker Visit – 50

Each baby  + 5

Pet litter + 5 (even if not a part of the ISBI)

Fully skilled toddlers in the fertility treatment generations: + 5 (each)

Honor roll + 5 (only counts once per life stage)

Every friend outside of household an idiot makes without heir’s help +5

Hands Off: +10 for every generation. If you never drag meals to the fridge, dishes to the dishwasher and trash to the garbage bin.

Heir maxing skill +10

Heir maxing career +20

Fulfilling LTW +40

Idiot maxing skill 100 % autonomously, without any modding or cheaty items +40

Spouse maxing career +50 (yes that’s a whopping +90 if they max career and fulfill LTW at the same time)

Randomizing every LTW choice and trait for a whole generation of children +20

Not using spares’ or spouses’ Happiness points for a generation +20 (if your spare stays, the happiness points are off limits after their birthday to YA)

Every 100 000 simoleons +40


+20 for feeding your pet with treats and gourmet food ONLY for pet’s lifetime (watch that bowl so no idiot fills it, or the points are lost!)

+5 for every litter (you have to keep at least one)

+5 for every new positive trait gained by training

+5 for every friend

+5 for chasing a ghost back to its grave

+10 for not using LTH points

+10 for harassing Grim

+20 for fully trained in tricks

+20 for maxed hunting

+30 for becoming a blue ghost (happy life) after death

-5 for peeing inside after being house trained

-5 for scratching furniture after being taught not to

-10 for ruined furniture

-10 for crashing (since pets sleep on the floor, this is a bigger deal than a sim crashing)

-50 for being taken by adoption service


11 comments on “New ISBI rules! What fun!

  1. fluffymao says:

    Oooo! Nice rule set! Very detailed. I’ve been wanting to try this challenge out, but the different rule sets confused me greatly. Now I might have to.


    • ixot says:

      I’m damaged from the random legacy challenge, which is CRAZY detailed, lol. I know it can be really over-whelming with long rule sets when you just want to start playing, but the details are more for future reference.

      The old rule set seems abandoned by the creator, since she hasn’t updated it since Ambitions.

      It would be awesome if you did! I would love to read it. 🙂

      Liked by 1 person

  2. autumnrein says:

    I really like these rules! Nice changes!


  3. Love that the spouse can only take a RH career. Very thoughtful.
    Might want to specify that the ‘sleep at school/work’ is off limits as an option because dETAILS! lol (j/k)

    Gah! -5 if a Trained Toddler wets themself? My score just plummeted. Ha! What about for non-potty trained toddlers?

    lol. I’m never going to get points for Hands Off. xD I’ll have to try that one since I’m bound to roll it in Sixkillers at some point.

    Ok. Question about Failing school. Is it failing if they get an F? Or if you get the pop up that so and so has bad grades and your sim is about to scold them?

    Love these Toxi! Love ’em! Thank you for writing these out!


    • ixot says:

      I thought the RH job for spouses was the original rule! LOL In my head it always was. I think the wording was “you may change their jobs to a RH one” but in my head it always was “you must”, which is basically true.

      Hm yes maybe.. but they sleep for such a short while that it hardly matters!

      YES! Non-potty trained toddlers can pee in their diapers all they want, lol. maybe I should add a rule that you have to potty-train toddlers, or else no one would do it. Honestly because of the randomize traits rule I only skill for screen shots. *bad sim parent*

      I have to admit that so far I haven’t followed the hands off rule at all.. but I will!

      I think F is failing, at least that’s what I remember from TS1 when they were shipped off to military school.. which happened A LOT back then, and I don’t think I’ve had a sim child with an F in TS3 ever. As far as I’m aware, nothing in game happens even if they fail school. A bad trait maybe?

      Thank YOU! 🙂


  4. umbramuse says:

    Those are some hardcore guidelines (don’t take the all-in-one bathroom!!! Noooo!), but definitely pose a good challenge. Great work. 🙂


  5. Not going to use the pet points yet, that is a bit to much, but the rest of the rules I have written down. Love the new extra rules and points. However about the 100.000 simoleons.. I did give myself permission to move to the spouse his/her house when married and to compromise the winning every 2 sim weeks the “Bank” takes back half of the money on the family account.. Again, love it!!! ❤ ❤ ❤


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