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Super huge! Inflatable play equipment Working Vehicles Exhibition Crossing Stadium City! Kids Train Children's Art Museum Vivi's Birthday Party

This year, it's even more exciting! We're venturing outside the Happiness Arena for tons of fun activities!

Date and time

May 4th (Mon) and May 5th (Tue), 2026
10:00 AM - 5:00 PM
*Due to popular demand, this event has ended.

venue

Nagasaki Stadium City
7-1 Saiwai-machi, Nagasaki City, Nagasaki Prefecture 850-0046

Special Sponsor

CosmoNet Co., Ltd.

Floor Map

Floor map

Prices & Tickets

Save more with 
Advance tickets
Get 100 yen off 
same-day prices & enjoy faster entry!
Play all day long with the Unlimited Play Pass!

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subject Area
Advance tickets Unlimited Play
 Pass
childAges 3 – High School 900円 AllAir-Bounce Park
Challenge Park
Kids Train
adult 200円
Same-day tickets Unlimited Play
 Pass
childAges 3 – High School 1,000円 AllAir-Bounce Park
Challenge Park
Kids Train
adult 300円
Single-Ride Ticket all 500円 Challenge Park or
Kids Train

Children aged 0-2 are admitted free of charge.

  • Each piece of playground equipment has age restrictions, height restrictions, and time limits for use. Please be sure to follow these rules.
  • Accompanying guardians must purchase a ticket for 300 yen.
  • You need to purchase an unlimited play pass to use the playground equipment inside the arena.

Same-day tickets

Same-day tickets are available 
at the Ticket Center on 2F (near North Plaza) of Stadium City.

Same-day ticket sales period: 9:00 AM - 4:00 PM

Locations where same-day tickets are sold

Super huge! Fluffy Park

Happiness Arena has turned into something like an amusement park! 
Lots of playground equipment that even preschoolers can enjoy!

Happiness Arena

Big Amusement Park Playland
Big Amusement Park Playland

Super huge! First appearance in Japan! 
These bouncy play structures are just like something out of an amusement park!

Recommended age: 3 years and up Height restriction: Under 140cm Weight limit: under 50kg

  • Double Lane Slider
    Double Lane
    slider

    Both its height and length are truly impressive!
    Playground equipment for adults too!

    Recommended age: 5 years and older Height restriction: None Weight limit: None

  • Soccer bounce
    Soccer bounce

    A giant soccer ball has appeared!? 
    Let's go inside and have some fun!

    Recommended age: 5 years and older Height restriction: Under 140cm Weight limit: under 50kg

  • Polar Bear Middle Slider
    Shirokuma Middle
    slider

    Looks like it could jump in at any moment!? 
    A slider featuring polar bears and penguins!

    Recommended age: 3 years and up Height restriction: Under 140cm Weight limit: under 50kg

  • Pirate ship ball pit
    Pirate ship ball pit

    Jump in with all your might! 
    Sliding into the ball pit!

    Recommended age: 3 years old to 12 years old Height restriction: Under 140cm Weight limit: under 50kg

  • Space Jump
    Space Jump

    Adults can play too! 
    Navigate through obstacles and aim for the finish line!

    Recommended age: 3 years and up Height restriction: None Weight limit: None

Challenge Park

This year, there are plenty of fun activities to enjoy outdoors!
Enjoyable for older elementary school students and even adults!

500 yen per sessionThis is not necessary for those who have purchased an unlimited play pass.

SOUTH Front 2F South Plaza

  • Working Vehicle Experience Game
    Working Vehicle Experience Game

    Operate the excavator 
    Try out various actions!

    No restrictions

  • Race in UFO cars!
    UFO car 
    race!

    Freedom in all directions!? 
    Run, bump into things, and reach the finish line!

    Recommended age: 3-10 years old Height restriction: Under 140cm

  • Zero Shock Jump Off
    Zero Shock 
    Jump off

    Jump from a height of over 3 meters!
    A new kind of attraction that even adults might find scary?

    Recommended age: 10 years and older Height restriction: 110cm or taller Weight limit: 30kg-90kg

Crossing the Stadium! Kids Train

A playground featuring a steam locomotive-themed train that travels 220 meters one way, perfect for families!

Peace Stadium 2F Concourse(Urakami River side)

500 yen per sessionThis is not necessary for those who have purchased an unlimited play pass.

Target age: None
(Children who cannot sit on their own must sit on their parent's lap.)
*Please note that operations may be suspended in case of rain or strong winds.

Working Vehicles Exhibition

Self-Defense Forces vehicles, 
Police motorcycles and other working vehicles gathered together! 
Have fun riding the trains and taking pictures!

Happiness Arena Outdoor Special Booth

Free

  • 1/2-ton truck

  • Motorcycle police

  • Safety Catch

  • Tour bus (Nagasaki Bus Tours)

  • Pump truck

  • Aerial work platform

  • Nagasaki Velca team bus

  • V-Varen Nagasaki team bus

Exhibition schedule

Vehicle name 5/4 5/5
1/2-ton truck
Motorcycle police
Safety Catch
Tour bus (Nagasaki Bus Tours)
Pump truck 10時〜12時
Aerial work platformBoarding is permitted only when a driver is present.
Nagasaki Velca team busNot permitted to board
V-Varen Nagasaki team busOnly the driver's seat is permitted, and photography is allowed.

Children's Art Museum

Carp streamers,
vibrantly colored by children across Nagasaki, 
are now swimming along the 3F Concourse!

Stadium 3F Concourse

Free

Vivi is coming

Vivi's Birthday Party

To Vivi, who will be celebrating his birthday today,
We've decided to present Vivi-kun with a "Piista annual seat exclusively for him"!

May 5th (Tuesday, public holiday) 11:00-11:30 (tentative)

Peace Stadium

*Viewing area is behind the visitor's goal.
It is planned to be near the "WELCOME STAND" seating area.

Free

Furthermore, V-LOVERS members get an additional bonus!KMT presentsLet's express our love for Vivi-kun!

Wave the penlight that is linked to the app,
Let's send our love to Vivi-kun!

The top 30 students will receive a birthday party after the party.
You can take a photo with Vivi-kun!

Application requirements: Must be a V-LOVERS member
Capacity: 100 people (by lottery)
Participation fee: Free

Applications are now closed.
Taking a walk with Vivi

Vivi-kun will be visiting various places, including the arena and the South Plaza!
You might be able to meet Vivi-kun somewhere in the venue!

May 5th (Tuesday/Holiday) 13:00~

Happiness Kids Areas

Participation fee: Free admission
*A pass is required to enter the arena.

*Depending on the situation on the day, we may limit the number of people allowed to attend.