- "This is such a weird challenge!" — Kelsey, first episode.
And thus begins Kelsey Impicciche's attempt to complete the 100 Baby Challenge in The Sims 4. Throughout the challenge, she controls the Impichishmay family, led first by supermom Chelsea Impichishmay, as Chelsea has as many children as possible and then proceeds to raise them and move them out as fast as humanly possible. After Chelsea becomes an elder and later dies, her daughter Kasey Impichishmay takes over the challenge, then she is succeeded by her daughter, Kelly Impichishmay.
Thus far, besides the main series featuring Chelsea and then Kasey, there have been spin-offs featuring Olive Impichishmay attempting to become rich and famous, Jaime Impichishmay trying to solve the Strangerville mystery, Niya and Natalie Impichishmay attempting to become vampires, Brielle Impichishmay attempting an art heist, and Ginny and Willow Impichishmay working as an artist and a veterinarian respectively.
On July 7th, 2022, the format got a spin-off/revamp named Single Girl Tries The Occult Baby Challenge, where the original matriarch Chelsea Impichishmay comes back to try and have occult children with every occult species present in the game. Shortly after the end of that challenge, on March 14th, 2023, she decided to revamp the 100 Baby Challenge to celebrate the Infant update in The Sims 4. To prevent it from lasting two more years, a new rule set has been included, like expanding the household capacity up to 20 Sims, and setting Chelsea to be the one and only Matriarch available: if Chelsea dies or ages up to be an elder before she gives birth to her 100th child, the challenge will be lost. Because of that, having triplets is highly recommended.
This series presents the following tropes:
- Alpha Bitch: There are a few among the children.
- Natalie Impichishmay is the most notable example as seen in her spinoff.
- Anyone Can Die: Fathers, matriarchs, adult Impichishmay children, and even underaged children die during the run of the show.
- Author Avatar: Downplayed with Chelsea and Kasey, whom Kelsey has called extensions of herself.
- Kasey as well.
- Awesome Music: The series ends with a rock song about the series over a montage.
- Babies Ever After: Well duh. The series ends with Kelly having her last baby, named Kelsey.
- Better as Friends: Kasey and Tom Holland, whose friendship stays quite strong even after the sparks die. When they briefly try to rekindle something later on, it doesn't take.
- Big "NO!": Kelsey gives multiple as Harry dies.
- The Bus Came Back: The final episode has Chelsea's first eight kids reuploaded into the neighborhood, although all of them had died much earlier.
- Character Death: Pretty much EVERY one of Chelsea's dads predeceased her.
- And now as of episode 26 Chelsea herself.
- As of episode 39 Bran, Olive, Brielle, Charlie, Alexis, Rosé, Theo, Flynn, Natalie, Willow, and Ginny, plus a few other of Chelsea's children.
- As of Episode 40 there are even more die-offs, including Nova and Freya, one after the other.
- Harry drowns on his birthday as a teen.
- After Kasey's children start dying as well, Kelsey says "screw it" and turns off auto-aging, averting this for the rest of the play-through. Any of Kasey's remaining children got to live out their days, as does Kasey herself, as Kelsey can't bear to let her go.
- In one episode, Wesley dies of embarrassment shortly after aging up and will likely return as a ghost along with Chelsea and Harry.
- Cuteness Proximity: Kelsey loses it whenever there are pets onscreen.
- Dead Guy Junior: Child #50: Olivia Impichishmay. There's also children named Chelsea Jr and Oliver.
- Determinator: Chelsea. She will raise successful children, and will seduce her target impregnator!
- Earn Your Happy Ending: Kasey has a tough life. Her parents die when she's young, most of her siblings and many of her children predecease her, and she generally has a lot on her plate. But then she meets a nice boy who'd loved her when she was young...and they move out together after Kelly reaches adulthood, with no more kids to raise and no risk of Kasey dying (as Kelsey turned off auto-age). Damn does that feel satisfying.
- Ethical Slut: Chelsea again. The one time she sleeps with a married man she did so unknowingly. Nonetheless, it never happens again.
- Kasey is as well. She refuses the advances of a very persistent married man herself.
- Fiery Redhead: Kelsey refers to the hotheaded, redheaded Autumn as such at one point.
- Five-Finger Discount: Kelly relies on this pretty intensely. She and her aunt Brielle would probably get along.
- Forgotten Fallen Friend: A lot with deceased parents of Impichishmay children.
- Even Craig is pretty much not mentioned after his death episode, and he was the love of Chelsea's life. Although he's later redownloaded into the game and he and Chelsea get married.
- Averted very very hard by Chelsea's chilren. Kasey's kids all go into mourning, including Logan, who at the time is toddler who had never met them.
- Funny Background Event: Romeo Impichishmay falls on his way out of the house as Kasey and Tom Holland come in together. Kelsey doesn't notice.
- Irony: One of the daughters in the family ends up with the goal of having a big family. Five minutes later, she gets a new trait, which is "hates children".
- Much darker example: mere moments after Kasey conceives the fiftieth child of the challenge, they get a notification of the death of the first Impichishmay child, Bran.
- Episode 40 has a doozy of one. During Dustin, Harry, and Leo Jr.'s birthday party/50 baby celebration, Harry drowns.
- Jerkass Realization: Kelsey had been laughing about the fact that she was going to throw a party in spite of the fact that her sims needed their needs up. During said party, Harry passes out in the pool and drowns as a result. Kelsey resolves to do better for her sims.
- Jerk with a Heart of Gold: A few of the children have the "mean" or even outright "evil" traits. However, thus far pretty much all of those examples are closer to this.
- Olive, for instance, has the "mean" trait. However, she is a very responsible girl as a child and later teen, absolutely loves her dog in her spinoff series, and has a very sweet relationship.
- Eric also stands out. He has the evil trait, but was often seen caring for his younger siblings autonomously.
- Iconic Outfit: Chelsea has her little red dress, her overalls, and her hospital gown.
- Kasey also has a little red dress. This has become a tradition, as Kelly also has one.
- Massive Numbered Siblings: The final count for Chelsea’s children? 32!
- Not to be outdone, Kasey managed to birth 36 children, though only 35 make it to adulthood...and one of them just barely.
- Mood Whiplash: Episode 39. Kasey has just met Tom Holland, which Kelsey thinks is hilarious. They woohoo and conceive child #50. And then the family gets a phone call, and every one of them appears to be sad...
- The rest of the episode fluctuates wildly in tone, ranging from Kelsey cooing over Tom Holland to being horrified as in-game children die again and again, while Kasey tries to have a nice night.
- Naked People Are Funny: Freya Impichishmay, as a toddler, strips and decides to wander around the garden. Kelsey herself cracks up.
- Kelly later shows up to her mother's party naked. To be fair, she was also a toddler.
- Kelly then dares her older sister Elliott to streak. She does. In a thunderstorm. Kelsey just about dies.
- Nice Girl: Chelsea again. She seems like a lovely person.
- Niya Impichishmay as well.
- Kasey Impichishmay takes after her mother as well.
- No Celebrities Were Harmed: As of Kasey's run, averted. Chelsea had hooked up with a few fictional characters, but Kasey hooks up with 90's Leonardo Di Caprio and Tom Holland.
- Primal Scene: Lucian, one of Kasey's kids, walks in on her when she's woo-hooing with Darrel in the shower. He doesn't really react.
- Subverted a few episodes later when Autumn walks in while Kasey and another one of her lovers are in the closet. Turns out they're just making out in there, though it wasn't quite clear to Kelsey until afterwards.
- ...and then played straight later in the episode, when Harry walks in on Kasey and the same guy while they're woo-hooing and reacts in horror.
- Really Dead Montage: Happens when Kasey hears about the death of Olive Impichishmay. Notably the only character thus far to receive this treatment, even if other characters died first.
- Ship Sinking: Natalie and Caleb break up in the finale of Natalie's spinoff series, with no chance of the two ever getting back together.
- Stacy's Mom: Chelsea. After Episode 22, she is literally Stacy's mom. Both of these are lampshaded by the commenter who named her.
- Kasey as well, who remains quite attractive throughout her life.
- Strong Family Resemblance: After Kasey dyes her hair (because Kelsey was weirded out by her resemblance to her IRL mother), she looks pretty much exactly like her mother Chelsea.
- Trademark Favorite Food: Garden salads.
- Trauma Conga Line: Poor Kasey loses both her parents at a young age, all her siblings, and predeceases several of her children. Some of them age and die, but one who dies as a teenager.
- Twofer Token Minority: Sorta. There have been had mixed-race Impichishmays and members of the family representing different queer identities before, but Ginny Impichishmay is the only non-binary member of their family seen thus far. They are also mixed-race, making them this trope.
- The Unfavorite: Discussed and played for laughs with Brielle, the second-eldest. Kelsey constantly jokes that she's the most unloved, though based on her comments and the love she gets in the fandom, it's mostly just a joke. Chelsea did lose her birth certificate, though...
- Wham Episode: Episode 28. Chelsea gets married, Kasey is of childbearing age now meets her first potential love interest at her mother's wedding, and Chelsea dies at the end of the episode.
- Episode 39. Kasey meets and becomes pregnant by who appears to be the love of her life, Game!Tom Holland, which incidentally makes child #50. And then they get a phone call announcing Bran's death. Many if not most of Chelsea's children die during the episode, including fan favorites.
- Episode 40. Besides the continuing whams from last episode, the family reaches 50 babies. Except then Harry dies before aging out, setting them back a baby.
- What Happened to the Mouse?: Old!Craig has not reentered the story after Chelsea's death, even though he's probably still alive.
- Wise Beyond Their Years: Referenced with Logan Impichishmay, who, as Kelsey points out, can clearly already grasp concepts of mortality despite being a toddler in Episode 40 while still in mourning for his aunts and uncles.
