Cupcake Wars: My Melody vs. Kuromi

Want a party game that doubles as dessert? Host Cupcake Wars! We split guests into two teams (kids versus adults) —and our theme was My Melody vs. Kuromi.  Everyone decorated four cupcakes (two inspired by each character). Then we built two giant displays and crowned a winner. Here’s exactly how we ran it so it was fun and organized.
Wide view of a Hello Kitty themed garage with black drape walls, pink lights, a My Melody screen, and two decorated tables set for a cupcake decorating contest.
Cupcake Wars arena: My Melody vs. Kuromi in our pink-lit garage theater.
The Setup (“be extra", if you want)
I repurposed our annual themed Halloween garage “theater” by keeping the black drape walls and projector, swapping the lights to pink, and hanging My Melody decor on one side and Kuromi on the other. Two folding tables (one per team) were covered with themed tablecloths, set with pink plates, and lit with battery-powered hanging bulbs. If you aren't as crazy as me and don't theme your garage for Halloween every October, two basic tables work just fine.
Close view of the Kuromi table with pink plates, clear topping bowls, and a large Kuromi balloon hanging above against black drapes.
The Kuromi side—moody colors, spooky-cute vibes, and a hanging Kuromi balloon.
Close view of the My Melody table with pink plates, topping bowls, and a My Melody balloon surrounded by themed posters.
The My Melody side—bright, sweet, and ready for pink frosting
The Labeling System (the secret to zero chaos)
• Place a colored dot sticker on each plate: we used blue for kids and yellow for adults. Number every dot (1, 2, 3…).
• On each large display stand, set individual cupcake circles and put the matching sticker + number on each circle—four per person.
• Put the same numbered sticker on each guest’s cupcake to-go box.
After decorating, guests transfer their cupcakes to the display by matching numbers. At pickup time, it’s easy to box the right four cupcakes for each person (using food-safe gloves, of course).
Decorating Rounds
Each guest received 2 vanilla + 2 chocolate cupcakes (four total).
• Round 1 (5 minutes): Decorate two Kuromi cupcakes at the Kuromi table (chocolate/purple frosting, bat sprinkles, pink chocolate skulls, etc.).
• Round 2 (5 minutes): Switch tables and decorate two My Melody cupcakes (pink/white frosting, strawberries, mini marshmallows, cute sprinkles).
We ran a big countdown on the projector between rounds.
Adults gathered around a table decorated with Kuromi decor, focused on decorating cupcakes while a countdown timer projects on the wall during a Hello Kitty cupcake wars game.
The adults’ team hard at work creating their My Melody and Kuromi themed cupcakes, with the countdown clock projected on the wall behind them.
A group of kids, plus an adult honorary kid, decorating cupcakes during a Hello Kitty cupcake wars party activity, sitting at a Kuromi and My Melody themed table.
The kids’ team, with my dad joining in as an honorary kid to help balance the teams.
Teen guest placing toppings on decorated cupcakes at a party table.
A guest on the kids’ team adds the finishing touches to her final cupcake.
Display, Judging & Prizes
Everyone added their cupcakes to the corresponding numbered spots on the two tiered displays—about 40 cupcakes per team. I “agonized” over the decision and (of course) declared the kids’ team the winners. As a reward, they got to visit "Batz-Maru's XO Arcade" at the end of the party.
Large tiered cupcake stands on a kitchen island filled with pink, purple, and chocolate cupcakes from the Cupcake Wars activity.
The final reveal—two giant displays packed with My Melody and Kuromi cupcakes.
Large tiered cupcake display stand filled with colorful decorated cupcakes inspired by My Melody and Kuromi, with a pink Hello Kitty birthday backdrop in the background.
Close-up view of decorated cupcakes featuring pink chocolate skulls, strawberries, and colorful sprinkles, displayed on a white tiered stand.
Wrap-Up
Our My Melody vs. Kuromi Cupcake Wars turned into the sweetest showdown. The numbered-sticker system kept everything organized so guests could proudly add their creations to the towers and take them home in to-go boxes (no cupcake mix-ups here!).

Huge shout-out to Crafty in Crosby for the foam-board cupcake tower tutorial that made our giant displays possible. My mom followed their guide to build the tiered stands we used for judging—and we loved them so much we re-used the towers in the Bubba’s Pizzeria party gift shop to display prizes. You can make your own with their tutorial here: Crafty in Crosby: Make Your Own Cupcake Tower.

Planning a full Sanrio celebration? Check out the rest of my Hello Kitty series:
• Sanrio Party Menu Ideas (cute, kid-friendly snacks)
• How to Make Big Party Signs (bold backdrops on a budget)
• Hello Kitty Party Overview (all eleven themed activities in one place)

Pin this post for later, and if you run your own Cupcake Wars, tag me—I’d love to see your creations!
A pink and black Hello Kitty birthday party setup featuring My Melody and Kuromi decor, with two party tables ready for a cupcake decorating contest. The space is styled with Sanrio banners and themed lighting, perfect for a birthday baking challenge.
Colorful display of decorated cupcakes on tiered platforms for a Cupcake Wars birthday party. Includes dozens of creative cupcake designs in pink, purple, and chocolate tones—perfect inspiration for hosting a cupcake decorating competition at home.

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