Kyuzan Inc. (Head Office: Shibuya-ku, Tokyo, Representative Director: Takashi Takumi, hereinafter referred to as Kyuzan) is pleased to announce the official release of "MUSHInomics with MUSHIKING," a blockchain game based on "Mushi King," licensed by SEGA CORPORATION (hereinafter referred to as SEGA).

This game is planned to hold an event for approximately 6 weeks after its limited-time release.

◆About Season 1

Season Period: November 11, 2025 (Tuesday) 12:00 - November 18, 2025 (Tuesday) 12:00

The periods for subsequent seasons will be announced on the official X.

◆How to Play MUSHInomics with MUSHIKING

This game is a card battle game that can be played on web browsers on PCs and smartphones. Players collect Mushi cards using MUSHI issued on the Oasys chain to build the strongest deck.

1. Acquiring and Collecting Cards
First, you obtain the Mushi cards needed for battle.

・Acquisition Method: You can mint (issue) Mushi cards for battle using MUSHI, OAS, or pOAS in a gacha format. You can also draw a gacha for free once a day.

・Card Features: Cards are provided in SBT (Soulbound Token: Non-transferable) format, and their validity in the game is limited to the corresponding season. Cards have parameters such as "HP (Health Points)," "Preferred Hand (Rock/Scissors/Paper)," "Special Move," and "Attack Power," and also possess "Traits" through which players can earn score bonuses. The higher the rarity of the card, the more traits it may have.

2. Deck Construction
You construct a deck using the acquired Mushi cards.
Deck Size: The deck used in battle is composed of a maximum of 10 cards.
Main Card: It is essential to designate one card in your deck as the "Main Card." This card will be used in actual battles.

Strategic Trait Bonus: Each card has a "Trait." If you have 3 or more cards with the same "Trait" in your deck, the "Trait Bonus" will be activated, granting score bonuses. Finding the optimal combination of "Traits" is key to deck construction.

◆About Attribute Tokens

Attribute tokens are tokens corresponding to the battle hands of "Rock," "Scissors," and "Paper," and have the effect of enhancing the player's score-gaining ability in battles.

1. Overview and Acquisition Method of Attribute Tokens
・Issuance Form: Individual tokens for each hand of rock-paper-scissors are issued at YUKICHI.FUN.
You can obtain them by swapping MUSHI.

Official Website: https://yukichi.fun/jp
GOO(CA): 0x4437694D914fc8B7D700f73b4EcD0031474731d6
CHO(CA): 0xBa98E5339C52B9c5351D17f8c402Ff124434bDBb
PAA(CA): 0x2C610eBa28eB3CCbB72C94eb702F76d6fb0fd8EC

2. Score Bonus Effect
Attribute tokens are effective by directly adding bonuses to the score at the end of the battle.
In other words, owning more attribute tokens allows you to efficiently increase the score gained in battles using specific Mushi.

◆Game Overview

・Title: MUSHInomics with MUSHIKING

・Genre: Card Battle Game

・Platform: Web Browser

・Price: Free to play / Card purchases with tokens available

・Development/Operation: Kyuzan Inc.

・Release Date: November 11, 2025 *Game play is available for a limited time of approximately 6 weeks

・Copyright Notice: ©SEGA ©Kyuzan Inc. ALL RIGHTS RESERVED.

◆Latest Information Available Here

We will continuously provide the latest information about the project on our official X, so please follow us.

・Official X (formerly Twitter) account: https://x.com/mushinomics

◆What is "Mushi King"

"Mushi King" is a children's card game developed by Sega. It features a simple and intuitive battle system that incorporates the rules of rock-paper-scissors, and has gained immense popularity among elementary school boys since its launch in 2003, with a cumulative card shipment of 498 million cards and over 100,000 official tournaments held. It has transcended the boundaries of games and engaged in diverse media mix developments, including comics, anime, and movies, as well as corporate collaborations, creating a major movement.

◆About MUSHI

MUSHI is a meme coin issued on the Oasys chain. This game has been released as one of its utilities.

・Token Name: MUSHI
・Symbol: MUSHI
・Network: Oasys (Hub Layer)
・Total Issuance: 1,000,000,000
・Token Contract (Oasys): 0xbb5e4922061D5347eAe47f0A8BCbbCADEA5480A5

Additionally, liquidity provision will also be conducted on Ethereum.
・Token Contract (Ethereum): 0x2c0B8f6B79219b118dD588A7274893BA89e4f7eA

◆About Oasys

Oasys is a blockchain project aiming to tokenize real-world assets, primarily centered in Japan. Prominent global companies such as Sega, Bandai Namco Research Institute, Square Enix, KDDI, Rakuten Wallet, Com2uS, and Ubisoft participate as validators (chains' operating entities). Utilizing a two-layer structure with Layer 1 and a flexible, customizable Layer 2, it enables seamless transactions across various domains from games to enterprises, without fees and at high speed. Leveraging a strong network in Asia, especially Japan, and a record of launching over 50 contents including games from major companies, it aims to provide liquidity to globally valuable IPs and assets for global investors. The core currency, OAS token, has use cases including staking, payments within content, DeFi, and token issuance, functioning as the nucleus of the Oasys ecosystem, which fuses entertainment and finance.

Website: https://www.oasys.games/ 
X(EN): https://twitter.com/oasyschain
X(JP): https://twitter.com/oasys_japan 
Discord: https://discord.com/invite/oasysofficial

◆Company Information

■ About Kyuzan Inc.
Kyuzan Inc. is a startup developing Web3 products such as NFT games and a Web3 development foundation. The NFT game "EGGRYPTO," which we are co-developing with GameWith, boasts the largest number of active users globally.
In addition, the Web3 development platform "MOUNTAIN" supports the largest number of domestic businesses in Web3 development and is implemented in NFTs and Web3 services of global gaming companies, brands, and IP holders.

■ Overview of Kyuzan Inc.
Company Name: Kyuzan Inc.
Representative: Representative Director Takashi Takumi
Location: Shibuya Scramble Square WeWork, 2-24-12 Shibuya, Shibuya-ku, Tokyo
Established: April 4, 2018

Business Content: NFT game development and blockchain technology services
URL: https://kyuzan.com/

MOUNTAIN: Web3 development solution for businesses
URL: https://mountain.io

EGGRYPTO: The world's first mobile-native NFT game
URL: https://eggrypto.com

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©SEGA ©Kyuzan Inc. ALL RIGHTS RESERVED.

※ The company names and product names listed are trademarks or registered trademarks of their respective companies.