"Found in Yokohama! Pokémon Sleep Research" Details: "Pokémon Sleep Stamp Rally" and a Plaza with a Sleeping Snorlax Appear, Plus a Goods Shop and Original Drink Stand Open!

Mitsubishi Estate Co., Ltd. (Headquarters: Chiyoda-ku, Tokyo; President and Representative Executive Officer: Atsushi Nakajima) and The Pokémon Company (Headquarters: Minato-ku, Tokyo; President: Tsunekazu Ishihara) will co-host "Pokémon Sleep 3rd Anniversary Found in Yokohama! Pokémon Sleep Research presented by MITSUBISHI ESTATE GROUP" from Friday, July 17, 2026, to Sunday, August 23, 2026, at Yokohama Landmark Tower (Landmark Plaza) (Yokohama City, Kanagawa Prefecture / Operation: Mitsubishi Estate Property Management Co., Ltd.) and MARK IS Minatomirai (same location / Operation: same company). We are pleased to announce the details of the event.

At both Landmark Plaza and MARK IS Minatomirai, a stamp rally called "Pokémon Sleep Stamp Rally" will be held, where participants can search for the sleeping faces of various Pokémon.

At Landmark Plaza, Sakata Seed Garden Square will be transformed into "Sleeping Snorlax Plaza," a plaza where a giant Snorlax sleeps. Additionally, you can enjoy the "Mega Pokémon Gacha" in the 3rd-floor Event Space, where you can win an original muffler towel with a "Pokémon Sleep" design.

At MARK IS Minatomirai, the "Pokémon Sleep Shop" will open on the 1st floor of Minna no Atelier, offering original merchandise commemorating the 3rd anniversary of "Pokémon Sleep." Furthermore, the "Pokémon Sleep Drink Stand" will appear on the 1st floor of Grand Galleria, where you can enjoy original drinks inspired by those featured in "Pokémon Sleep." Additionally, on the 5th floor of MARK IS Minatomirai, you can experience the "Nap Recovery Device supported by TOTONE," a collaboration between "Pokémon Sleep" and "TOTONE," a strategic napping tool developed by Toyota Motor Corporation.

Event Overview

[Event Name] Pokémon Sleep 3rd Anniversary Found in Yokohama! Pokémon Sleep Research presented by MITSUBISHI ESTATE GROUP

[Event Period] Friday, July 17, 2026 - Sunday, August 23, 2026

[Event Venue] Yokohama Landmark Tower (Landmark Plaza), MARK IS Minatomirai

[Organizers] Mitsubishi Estate Co., Ltd., The Pokémon Company

[Special Website] https://www.pokemonsleep.net/event2026/

*Please note that event details are subject to change. Thank you for your understanding.

Common Initiatives for Both Facilities

Collect by visiting both facilities: "Pokémon Sleep Stamp Rally"

A stamp rally will be held where you can find sleeping Pokémon at various locations in Landmark Plaza and MARK IS Minatomirai. You can enjoy collecting stamps with the same sense of fun as finding various Pokémon sleeping faces in the sleep game app "Pokémon Sleep."

[Stamp Rally Locations] Total of 6 locations

Landmark Plaza: 3rd Floor, 4th Floor, 5th Floor

MARK IS Minatomirai: 1st Floor, 2nd Floor, 5th Floor

[Novelty Gifts]

3 stamps collected: "Minatomirai Point App" 200 yen OFF coupon

6 stamps collected: "Pokémon Sleep" original sticker

[Novelty Gift Redemption Location]

Landmark Plaza, 3rd Floor, Special Counter

[Novelty Gift Redemption Hours] 10:00 - 19:00

*Participation is free.

*The event will end once the stamp rally sheets and novelty gifts run out.

*Novelty gifts will be given upon collecting the specified number of stamps. Due to limited quantities, please refrain from redeeming multiple times per day.

*The 200 yen OFF coupon (novelty gift) can be obtained once per "Minatomirai Point App" account per day.

*To receive the 200 yen OFF coupon, you must download the "Minatomirai Point App" in advance. App Official Website: https://www.pointapp.mm-point.jp/

*The 200 yen OFF coupon (novelty gift) is planned to be distributed to the first 1,000 people per day.

Stamp Rally Stand Image Stamp Rally Sheet Image

Let's find the Pokémon hiding in various places

Various Pokémon such as Dedenne, Mimikyu, Marshtomp, and Kangaskhan are sleeping in different locations within both facilities. Depending on their characteristics and habitats, some Pokémon might be hiding in inconspicuous or secluded spots. Enjoy searching for the sleeping faces of Pokémon.

[Locations] Landmark Plaza, MARK IS Minatomirai, various locations within the buildings

*Image *Image

*Image *Image

Developments at Landmark Plaza

Giant Snorlax is napping?! "Sleeping Snorlax Plaza"

Sakata Seed Garden Square on the 1st floor of Landmark Plaza will be transformed into "Sleeping Snorlax Plaza," where a giant Snorlax sleeps. Around the sleeping Snorlax, there will be a corner where you can write messages on cards with designs of Pokémon sleeping faces and berries.

[Location] Landmark Plaza, 1st Floor, Sakata Seed Garden Square

*Image

"Mega Pokémon Gacha" to win "Pokémon Sleep" designed goods

The "Mega Pokémon Gacha" will appear in the 3rd-floor Event Space at Landmark Plaza, where you can win an original muffler towel (4 types) with a "Pokémon Sleep" design.

[Location] Landmark Plaza, 3rd Floor, Event Space

[Business Hours] 10:00 - 19:00

[Price] 2,000 yen/play

*Designs cannot be chosen.

*For safety reasons, numbered tickets may be distributed during crowded times.

*Image *Original Muffler Towel Image

Developments at MARK IS Minatomirai

Limited-Time Shop "Pokémon Sleep Shop"

The "Pokémon Sleep Shop" will open, offering a wide selection of "Pokémon Sleep" themed merchandise, including original goods commemorating the 3rd anniversary of "Pokémon Sleep."

[Location] MARK IS Minatomirai, 1st Floor, Minna no Atelier

[Business Hours] 10:00 - 19:00

*Admission to the "Pokémon Sleep Shop" from Friday, July 17 to Sunday, July 26 will be by advance lottery. Winners will receive numbered tickets.

*Numbered tickets do not guarantee product purchase.

*Depending on stock availability, products may sell out during the period, or may be restocked.

*Merchandise from this event is scheduled for post-event mail order starting Monday, August 24, 2026. Details will be released in mid-August. For more information, please check the event's official website.

[Merchandise Lineup (Partial)]

We will be selling a total of 29 types of merchandise, including cushions, T-shirts (3rd Anniversary Festival), and Pokémon 30th Anniversary pin badges.

*All images are for illustrative purposes only.

- Cushion (3 types total) Front/Back

- Bucket Hat (2 types total) Front/Back

- T-shirt (3rd Anniversary Festival) - Walking Pouch *Plush toy not included. - Clear Bottle (Cyan Beach 300ml)

- Shopping Bag - Pokémon 30th Anniversary Pin Badge (3 types total) - Sleepy Puffy Stickers (2 types total)

*In addition to purchases, one shopping bag will be given to customers who spend 10,000 yen or more (tax included) per transaction. *Quantities are limited. Distribution will end once supplies are exhausted.

"Pokémon Sleep Drink Stand"

The "Pokémon Sleep Drink Stand" will temporarily open on the 1st floor of Grand Galleria at MARK IS Minatomirai, where you can enjoy original drinks inspired by those featured in "Pokémon Sleep."

[Location] MARK IS Minatomirai, 1st Floor, Grand Galleria

[Business Hours] 10:00 - 19:00

*Images are for illustrative purposes only. Actual products may differ in design and specifications.

*Drink sales and specifications may be changed or postponed due to various circumstances.

*Menus may change, and items may be out of stock depending on product availability.

*May contain ingredients including specific raw materials (allergens). Please be aware if you have severe allergies.

- Special Offer

For each original drink purchased, you will receive one original coaster (6 types total).

*Original coasters will be given out randomly. You cannot choose which one you receive.

*The number of original coasters is limited. Distribution will end once supplies are exhausted.

"Nap Recovery Device supported by TOTONE"

To commemorate the 3rd anniversary of "Pokémon Sleep," this is the first collaboration between "Pokémon Sleep" and "TOTONE," a strategic napping tool developed by Toyota Motor Corporation. At MARK IS Minatomirai, 5th floor, you can experience the "TOTONE" in a Monster Ball design with unique "Pokémon Sleep"-themed effects.

[Location] MARK IS Minatomirai, 5th Floor

[Reservation Reception Hours] 10:00 -

[Experience Time] Approximately 45 minutes per session

11:00 - / 12:00 - / 13:00 - / 14:00 - / 15:00 - / 16:00 - / 17:00 - / 18:00 -

*Image

Additionally, those who wish can experience brainwave measurement using "InSomnograf," a sleep measurement service developed by S'UIMIN Inc., chaired by Professor Masashi Yanagisawa. Participants will receive an original design report containing their brainwave measurement results.

*To experience this, please show the "Pokémon Sleep" app screen to a staff member. The experience is free.

*Due to limited availability, numbered tickets may be distributed during crowded times.

*No advice or diagnosis regarding sleep improvement will be provided.

About "TOTONE"

"TOTONE" is one of Toyota Motor Corporation's new businesses, developed by focusing on sleep deprivation, a social issue in Japan, and its associated adverse effects. It is a strategic napping tool developed by applying technologies such as comfortable space design cultivated through automotive manufacturing.

It supports comfortable sleep induction, sleep, and awakening by combining a semi-private seat pursuing comfort and seating comfort with air cushions that stimulate the body, appropriate temperature control, light, and sound, while regulating breathing rhythm to promote sleep induction, and gently lifting the back and hips upon waking.

"TOTONE" Official Website: https://www.toyota.co.jp/totone/

*"TOTONE" is a registered trademark of Toyota Motor Corporation.

About "InSomnograf"

Developed by S'UIMIN Inc., chaired by Professor Masashi Yanagisawa (Director, International Institute for Sleep Medicine, University of Tsukuba). It is a sleep measurement service that measures brainwaves during sleep and analyzes them with AI. Anyone can measure their sleep with medical-grade accuracy anywhere. It can be used for health checkups, and plans are available that offer screening for sleep disorders by a doctor and advice for sleep improvement. It is also used for effect verification of sleep-related products and research.

About "Pokémon Sleep"

A sleep game app released in July 2023 with the concept of "making you look forward to waking up," set on a small island where Snorlax sleeps. Starting in 2025, data measured by smartwatches will also be linked.

"Pokémon Sleep" Official Website: https://www.pokemonsleep.net

- Title: "Pokémon Sleep"

- Price: Free to play (in-app purchases available)

- Publisher: The Pokémon Company

- Developer: SELECT BUTTON inc.

- Supported OS: iOS / Android

- Genre: Sleep Game

- Number of Players: 1

- Supported Languages: Japanese, English, Spanish, French, German, Italian, Korean, Traditional Chinese

- The Spanish language supported by this app is "European Spanish."

- App Store: https://app.adjust.com/1rys7f6f

Copyright/Award Information

©Pokémon/Nintendo/Creatures/GAME FREAK

Pokémon Sleep is developed by SELECT BUTTON inc.

Pokémon, Pocket Monsters, and Pokémon are trademarks of Nintendo, Creatures, and GAME FREAK.