Regression Aggression! is a limited time questline that was released on April 22, 2015 during the The Kids Are All Fight Promotional. Progressing through it unlocks Lisa's Kiddie Car.


Quest Requirements Time Reward Triggered By
Regression Aggression Pt. 1 Make Bart Act Like an Infant 4h Cash100, XP10 Auto
Regression Aggression Pt. 2 Make Bart Block the Basement Door 8h Cash100, XP10
Unlock: Nightmare Pile to purchase
Regression Aggression Pt. 3 Make Lisa Ride Old School
Make Bart Pout
Cash100, XP10
Unlock: Lisa's Kiddie Car


Regression Aggression Pt. 1Edit

Character Dialogue
Homer Icon "Bart, you got paint on the driveway! It ruined my favorite oil stain."
Bart Icon "Lisa was there too! Look, she's got paint all over her hands – you just can’t see it because it's yellow."
Homer Icon "Now you're in trouble for tattling too!"
Bart Icon "Ugh, I only get blamed because I'm the oldest! I wanted to be born second, Mom and Dad just didn't listen to me."
Bart Icon "If I was the baby, I'd never get in trouble. They have the system wired – they don't even have to wipe themselves."

Regression Aggression Pt. 2Edit

Character Dialogue
Bart Icon "Ma-ma! Da-da! Barty want cookie! And Barty want Sony Playstation 4 Grand Theft Auto bundle!"
Homer Icon "He's got to stop acting like a baby. I hate baby stuff!"
Homer Icon "Except for you, baby Maggie! And you Marge, baby."
Marge Icon "Don't worry. Bart will get tired of acting like a baby soon."
Marge Icon "He never sticks with anything for more than a week."
Lisa Icon "If Bart's going to act like a baby, maybe Dad should bring his old clown bed out of the basement."
Bart Icon "No! That thing is scarier than "The Shining" or the original Japanese version of "The Ring.""
Bart Icon "Whoops, I mean… "Waah-waah-waah!""
Dredge up Bart's childhood fears with the Nightmare Pile... and get some scary animated jobs for other kids to boot!
— In-Game Message

Regression Aggression Pt. 3Edit

Character Dialogue
Lisa Icon "Bart, you've got to cut this out. You can't act like a baby forever."
Bart Icon "Aw, is Wisa feewing a widdle bit weft-out?"
Lisa Icon "*sigh* I guess I can't fight this. And when you can't fight 'em, you gotta…"
Lisa pacifier Icon "…pacify 'em!"
Lisa pacifier Icon "*sucks*"
Maggie Annoyed Icon "..."
Tune into this week's Simpsons for a glimpse of Bart and Lisa's toddler rivarly! Sunday 8/7 central on FOX!
— In-Game Message

You've been awarded "Lisa's Kiddie Car"!
— In-Game Message


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