Hello, simmers! Welcome to my first challenge called 16 lives! I believe that you'll need University for this, because you're gonna have roommates... anyway, enjoy!

BACKSTORY

Your sim trudged through the snowy streets of Sunset Valley, the cold hard wind blowing in their face. Their cheeks were flushed and bright-pink, their eyes sad and droopy. Their energy had been sapped out of them, tired from walking around all day in search of shelter. Their expression saddened as they remembered how they had gotten into this mess in the first place.
It was a sunny evening during the summer. They had been resting comfortably on their girl/boy friend's couch, who had an arm wrapped around their shoulders. On the screen blared an old romance movie, the sappy kinds where you know it's going to work out in the end. The main character, who was a girl, had five kids and found it hard to find love. They started to zone out after around 10 minutes into the movie, wondering what it would be like if they had 5 kids. They wondered if their boy/girlfriend wanted 5 kids. They glanced over at their lover, who had a smile on their face, enveloped in the movie. It isn't the time to ask, their sim brain thought. Their mouth didn't listen. They blurted out to their lover how they wanted kids, and wondered if they wanted kids, too. The sim's lover's expression was horrified. They looked disgusted, as they quickly stood up, backing away from your sim. Well, turned out that your lover had hated kids. The two sims got into a heated argument about it, and it ended with their former lover kicking them out onto the streets.
Just as their flashback ended, their foot got stuck in some snow. Ugh, just my luck, they thought bitterly as they tugged at their foot. No luck. Angered, they crouch down, using both of their hand to free their foot. They end up on their back, staring at the night sky. It felt so comfortable, the freezing cold snow, the sight of the stars twinkling in the sky. They wondered what it would be like to die, to just rest in peace. That's when they catch a whiff of something delicious. They sniff the air again, smelling the homey, comfortable smell.
Maybe a house that's willing to let me stay for the night? They think excitedly, getting up. They tromp through a couple of streets, before coming face-to-face with the most expensive restaurant in town. Even from outside, they can hear the laughter and chatter of loving sims, and clinking on glasses, enjoying Snowflake Day. They give a sad sigh, turning around to leave. That's when they hear another sound, a different one. They turn back around, eyeing the street. That's when they see it. They see a group of about 7 sims, huddled near a dumpster. One sim seemed to be in it, with their legs sticking out. The other sims nearby looked to be in terrible shape, with bright-red faces and ripped up clothing, using the thick layer of snow as blankets. Your sim seemed to be in shock; more sims just like them? They took the risk of walking over there, quickly alerting the sims of their presence. You sit down with them, talking a bit. Shortly after, the dumpster-diving sim joins the group, and it turns out that they're the oldest one- a teenager. They talk for a while, and your sim decided to join them.
5 months later, you and your group of sims come across a landlord who is willing to give you a plot of land in exchange for taking care of some troubled sims. After you agree, they tell you that it's 8 sims that are coming. They give you a 50,000 simolean grant, letting you build what you would need. Here's where your story begins..

CHALLENGE
CAS
You must make 8 sims, one being a YA or A. They can be either male of female. I would give them clothing that''s more tattered, just for realism. Two of their traits must be Nurturing (if you have Generations, if not you'll have to substitute.) and Family-Oriented. You can pick the rest.
You must make 2-3 toddlers. You can pick their gender, and one must have just bad traits (e.g, light sleeper and grumpy). If you want to, you can make 1-2 toddlers, and then adopt a baby in-game. I'm not stopping you.
Now, you have to make 2-3 children. Once again, you can pick the gender. And once again, one must have all bad traits (e.g, clumsy, grumpy, couch potato.) Just note that if you make 3, that leaves room for only one teenager.
The last sim you'll be making is 1-2 teenagers, depending on how much room you have left. You can pick the gender, but one/they must have rebellious trait (if you don't have Generations, make them grumpy or evil or something like that.). The other 8 sims will be roommates, whom you cannot modify.

BUILDING
You can pick an EMPTY lot of any size, it's your choice. You can motherlode yourself of 50,000 simoleans if you need to. Now, you will have to create two rooms. I would make them both pretty big, since one will have to be a bathroom and bedroom for 7 sims, and one must be a kitchen, bedroom, bathroom, and dining room.
For the bigger one, create a small room with the cheapest toilet, mirror, sink, and shower. for the rest of the room, you will have to put in 7 of the cheapest beds or sleeping bags. If you want to, you can add the cheapest bookcase or toys or something like that. Also, make sure you have cribs for your toddlers/babies, but if you want more a challenge for the other sims you can have no crib at all. Put in a walker/playpen too, if you have it and want to.
Now, for your area. You can make a bedroom area, with the cheapest lamps, bedside tables, double bed, and wardrobe. The bathroom needs the cheapest toilet, shower, sink, mirror, and washing machine/dryer if you have it. Section off a kitchen area, which should have 2 counters, one with a sink, the cheapest stove, cheapest fridge, and a smoke detector. Make sure that only you can enter it, so that greedy sims don't steal all the food... (imagine it. In real life, you would only have a limited amount of meals.) For the last room, make a dining room with either 3 tables that can fit 6 sims each, or two tables that can fit 8. Make sure to set the tables with food before you let the other sims in, though!
GAMEPLAY
When you actually start, set your funds to 200. You are NOT permitted to get hired for any job at all, same with the other sims. Your job will be to cook, clean, and make sure that all of the sims grow up in a good environment. You win if you have enough simoleans to move to a new home and that all roommates have aged (they'll have their life back together by the time they're A/E) and that all of the sims you were taking care of have gotten A's, been to prom, learned to walk, talk, and use the potty, and have moved out.

RULES
-No jobs AT ALL. Your sim will have to find other ways to earn money.
- All toddlers must learn how to walk, talk, and use the potty by the time they've aged. You can have other sims teach them these skills if you want to. If they don't, assume that you've failed.
- All children and teens must have B+s or A's, and either gotten the honor roll or graduated and attended prom. (if you don't have Generations, then they must have the honor roll or the highest grade possible.)
- When the sims move out, you cannot kick them out. You have to move them to an actual home. Also, they cannot take sims that are under YA with them. That's cheating, bro.
- You can only cook 3 meals a day for the sims, so cook them wisely... If you're an ass you can only put out 3 dishes and the 3 lucky sims get to eat that day.. If you're nice, less sims will starve.
- try not to play other sims but your main, it's more fun that way. If they have to pee and someone's using the toilet, not your problem. Oh yeah, you should also lock your private bathroom and bedroom.. Unless you wanna share it.
- if something of theirs breaks, you don't have to fix it. But you will have to mop up the puddle later.
- If a child/teen sim misses school for any reason besides the fact that they can't or are sick, make sure that they only get to eat once that day (don't want them starving to death).
- If your sim wants to feed a stray or eat more than 3 meals for themselves one day, then you must take out one meal for the others (e.g,, you feed a cat one meal, only 2 meals that day.)
- If your sim masters cooking or gardening, then assume they can scrounge up 4-5 meals a day. (only five if they've mastered both cooking and gardening.)
- Your sim may NOT have a love life. They're busy, and still pretty heart-broken.
- if there's a money sign next to a food item, assume you can't make it. Run out to the store to buy ingredients, or let you and the others starve that day.
- You should set the lifespan to normal or long, your choice. Don't make it so that there's 2 days from baby-teenager.
- You can have generations of sims! If all the sims move out and you have a child, you can let them invite random sims in and change them so that they're kids, toddlers, teens, etc...
- If you kick out or move out the roommates, you are no longer welcome on that lot. The deal was that you get the lot for taking care of the sims.
- Your sim can't go to university, or travel to places or the future. You're needed where you are.
- at 11:00 pm, make sure that everything's cleaned. If not, then remove $70 from your account. if you don't have it, when you earn the money you must delete it to repay. This doesn't count if a sim trashes something around that time and you don't have enough time to clean up.
- Don't invite other sims over. Pretend that what you're doing is illegal in that town, so if any sim (besides the mailman, repoman, grim reaper, mascot, or anything like that) comes onto that lot, fence them in or kill them.. they'll report it to the police! Teens and children can go to other houses if you allow it, though.
- Your sim can go out shopping once a day. They probably won't have the money, though.
- Your sim must celebrate to the fullest! On snowflake Day, give all the sims presents, and on Love day hug all of the sims! For Spooky Day, have the kids and teens carve Jack-O-Lanterns and go trick-or-treating.
EXTRA CHALLENGE
Every two days, roll a dice. Use an app, a die, or random.org. (got this idea from MistyDW, btw)
1 - A raccoon gets in and steals a meal! You lose one meal that day.
2 - A child has an accident at school that got them suspended! Keep them from going to school for a day or two.
3 - Somebody steals all 3 meals that day! Serve 4 cereals for the lucky sims.
4 - Somebody comes in and steals $50 from you! You don't catch them in time.
5 - Wow! A mysterious sim leaves $200 on the front porch and a note wishing you luck! How nice of them!
6 - You are able to get a part-time job for two days! Hooray! (Must quit after the two days are up)
7 - Your sim gets a fever and must stay in bed all day. They are so weak, they can only make one meal that day.
8 - A teen gets in a fight with a burglar! They chase the burglar away, but you must spend $100 getting them fixed up! Keep them from school one day but don't suspend them from meals.
9 - A teen gets in a fight with a burglar! The burglar knocks them out and steals $120! Worst of all, you have to spend $100 getting them patched up! Keep them from school one day, and serve them only one meal that day.
10 - A toddler gets food poisoning from drinking spoiled milk! Spend $70 pumping their stomach.
11 - One of the roommates scrounges up $100 by playing the guitar! Best of all, they give it to you!
12 - It's a terrible day! For some reason, your sim feels exhausted! (keep their energy to low, and if they pass out wake them up.)
13 - The toddlers and children come down with the flu, so you must take care of them! Thankfully, your teenager steals your kitchen key and makes two meals that day!
14 - A homeless man shows up, offering you a strange drink for $20! You take it, keep your sim's mood up for the entire day!
15 - A homeless man shows up, offering you a strange drink for $20! You take it, keep your sim's mood low for the entire day!
16 - The roommates start to pick on the toddlers! The kids and teen(s) defend the toddlers, but get beaten up! Keep them from school that day, giving them your attention! The roommates had been locked up for the day! Give them one quick meal that day. If you have to, up their hunger a bit so that they don't starve!
17 - You run out to the store to get something, only to be robbed by a strange man! You lose $60.
18 - As you take a nice walk, you notice a lump of dirt. You investigate and find $600 in there, and a note that says congratulations! Hooray! But on the way back, your sim gets sick. Keep them in bed all day, or spend $100 to heal them!
19 - You take all 15 sims with you to the beach! When you get home, two beds and the stove are gone! You put up extra protection, so no more robberies at your house!
20 - Yay! You find a birthday cake! Pick one sim to age up that day.

Hope you guys enjoy this challenge! If you have any questions, feel free to ask!

This seems really cool. Well done!

Thanks! I thought it was pretty good, considering I'm not very creative.

cool challenge but y is it called 16 lives

I called it 16 lives because you'll have to take care of 8 sims, plus 8 roommates, which adds up to 16.