[Osaka, Kishiwada] New Giant Inflatable Playground 'MJMJ' Opens at WHATAWON on Saturday, May 2! To an Even Bigger, Scaled-Up New Attraction
The new giant inflatable playground 'MJMJ' opened at WHATAWON, an entertainment mall in Kishiwada, Osaka, on May 2, 2026. This attraction further scales up the existing inflatable play area, adding huge slides and athletic zones, and is drawing attention as a new leisure spot for families and pet owners.
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- 📰 Published: May 9, 2026 at 03:00
- 🔍 Collected: May 8, 2026 at 18:31
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WHATAWON (Watawon), an entertainment mall in Kishiwada, Osaka, has opened a new giant inflatable playground, "THE MEGA JUMP MOUNTAIN JAPAN" [MJMJ], on Saturday, May 2, 2026.
View Details
The popular inflatable play area has been scaled up even further! New huge slides and a large athletic area have been added, evolving into an experiential attraction where visitors can fully enjoy "jumping, sliding, and running."
During Golden Week, the venue was bustling with many visitors every day, with children excitedly playing and families enjoying themselves.
WHATAWON uniquely offers a spacious outdoor area where families, friends, and their beloved dogs can relax and spend time together. It is attracting attention as a new outing spot where you can enjoy playing, dining, and resting.
Overwhelming Presence. The Newly Introduced Giant Slide
The newly established 'MJMJ' is a super giant inflatable playground featuring an eye-catching, tall, huge slide. Its impactful visual design stands out from afar, giving it a unique presence within the area.
Within the spacious area, there are fluffy zones for jumping and bouncing, and large athletic elements where visitors can actively move around. It's an immersive space where everyone can run around freely, slide repeatedly, and get completely engrossed.
The exhilaration of sliding down the giant slide and the joy of playing with friends and family, combined with the open-air feeling unique to outdoor activities, make you forget the passage of time.
It's a perfect new popular spot at WHATAWON for the upcoming season when outdoor play feels great!
More Than Just "Playing." The Charm of WHATAWON, Where Anyone Can Casually Stop By
WHATAWON is a stay-type entertainment mall with a variety of content, including gourmet dining, shopping, events, and a dog run.
There are also extensive pet-friendly areas, making it popular not only for family outings but also for weekend dates for couples, outings with friends, and as a stop-over spot during drives.
A unique charm of WHATAWON is that everyone can spend their time as they wish, whether it's relaxing at a cafe while children play on the inflatable equipment, or enjoying time with beloved pets.
See events you can enjoy at WHATAWON
Usage Fees
[Weekdays]
Unlimited time: 800 yen
[Weekends, Public Holidays, Long Holidays]
30 minutes: 500 yen
1 hour: 900 yen
Extension 30 minutes: 450 yen
[Business Overview]
"THE MEGA JUMP MOUNTAIN JAPAN" [MJMJ]
■ Business Hours: 11:00〜18:00
■ Location: WHATAWON (Watawon)
■ Address: 1-32-1 Kishinoocho, Kishiwada City, Osaka Prefecture
Whether you want to play to your heart's content or spend a relaxing time.
Children, adults, and beloved dogs alike can all enjoy WHATAWON in their own way. Please come and enjoy the renewed super giant inflatable playground "THE MEGA JUMP MOUNTAIN JAPAN" 『MJMJ』.
WHATAWON (Watawon) is a stay-type entertainment mall in Kishiwada, Osaka, themed around "Play, Eat, Stay, Experience." It offers a wide range of content such as gourmet dining, shopping, events, and a dog run, and is supported by a wide range of generations as a facility where pets are welcome.
Japan's Largest Pet-Friendly Overseas-Style Mall 'WHATAWON'
Located in South Osaka, WHATAWON (Watawon) is a multi-complex facility filled with diverse entertainment, including gourmet dining, shopping, and hot spring facilities. It is designed as a new style of pet-free entertainment mall, where many pet owners who cherish their pets as family members can comfortably enjoy themselves.
Related URLs
ANTIQUA Official Website
https://www.antiqua.co.jp/
Antiqua Co., Ltd. (Corporate Site)
https://www.antiqua.me/
WHATAWON (Watawon) HP
https://www.whatawon.co.jp/
View Details
The popular inflatable play area has been scaled up even further! New huge slides and a large athletic area have been added, evolving into an experiential attraction where visitors can fully enjoy "jumping, sliding, and running."
During Golden Week, the venue was bustling with many visitors every day, with children excitedly playing and families enjoying themselves.
WHATAWON uniquely offers a spacious outdoor area where families, friends, and their beloved dogs can relax and spend time together. It is attracting attention as a new outing spot where you can enjoy playing, dining, and resting.
Overwhelming Presence. The Newly Introduced Giant Slide
The newly established 'MJMJ' is a super giant inflatable playground featuring an eye-catching, tall, huge slide. Its impactful visual design stands out from afar, giving it a unique presence within the area.
Within the spacious area, there are fluffy zones for jumping and bouncing, and large athletic elements where visitors can actively move around. It's an immersive space where everyone can run around freely, slide repeatedly, and get completely engrossed.
The exhilaration of sliding down the giant slide and the joy of playing with friends and family, combined with the open-air feeling unique to outdoor activities, make you forget the passage of time.
It's a perfect new popular spot at WHATAWON for the upcoming season when outdoor play feels great!
More Than Just "Playing." The Charm of WHATAWON, Where Anyone Can Casually Stop By
WHATAWON is a stay-type entertainment mall with a variety of content, including gourmet dining, shopping, events, and a dog run.
There are also extensive pet-friendly areas, making it popular not only for family outings but also for weekend dates for couples, outings with friends, and as a stop-over spot during drives.
A unique charm of WHATAWON is that everyone can spend their time as they wish, whether it's relaxing at a cafe while children play on the inflatable equipment, or enjoying time with beloved pets.
See events you can enjoy at WHATAWON
Usage Fees
[Weekdays]
Unlimited time: 800 yen
[Weekends, Public Holidays, Long Holidays]
30 minutes: 500 yen
1 hour: 900 yen
Extension 30 minutes: 450 yen
[Business Overview]
"THE MEGA JUMP MOUNTAIN JAPAN" [MJMJ]
■ Business Hours: 11:00〜18:00
■ Location: WHATAWON (Watawon)
■ Address: 1-32-1 Kishinoocho, Kishiwada City, Osaka Prefecture
Whether you want to play to your heart's content or spend a relaxing time.
Children, adults, and beloved dogs alike can all enjoy WHATAWON in their own way. Please come and enjoy the renewed super giant inflatable playground "THE MEGA JUMP MOUNTAIN JAPAN" 『MJMJ』.
WHATAWON (Watawon) is a stay-type entertainment mall in Kishiwada, Osaka, themed around "Play, Eat, Stay, Experience." It offers a wide range of content such as gourmet dining, shopping, events, and a dog run, and is supported by a wide range of generations as a facility where pets are welcome.
Japan's Largest Pet-Friendly Overseas-Style Mall 'WHATAWON'
Located in South Osaka, WHATAWON (Watawon) is a multi-complex facility filled with diverse entertainment, including gourmet dining, shopping, and hot spring facilities. It is designed as a new style of pet-free entertainment mall, where many pet owners who cherish their pets as family members can comfortably enjoy themselves.
Related URLs
ANTIQUA Official Website
https://www.antiqua.co.jp/
Antiqua Co., Ltd. (Corporate Site)
https://www.antiqua.me/
WHATAWON (Watawon) HP
https://www.whatawon.co.jp/