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double jump.tokyo
double jump.tokyo bootstrapped Japan's blockchain gaming infrastructure layer and built the Oasys chain, with partners including Sony, SEGA, and Square...
double jump.tokyo
double jump.tokyo launched in 2018, founded by CEO Hironobu Ueno and blockchain architect Naoto Tamaya. The firm emerged at the intersection of Japan's legacy gaming industry and the post-crypto boom, positioning itself as a bridge between major IP holders and blockchain-native game development. Ueno and Tamaya did not build a traditional family office or venture fund — they built an operating company that invests, incubates, and supplies infrastructure directly to the projects it runs. Strategy blends venture investment with hands-on game production and protocol development. The firm focuses on early-stage blockchain gaming and NFT projects, typically entering at seed or startup stage. Central to its model is the Oasys blockchain, a gaming-optimized layer-1 chain that double jump.tokyo architects and that counts SEGA, Square Enix, Ubisoft, and Bandai Namco among its validators (per Oasys documentation, 2023). Confirmed gaming projects include 'Battle of Three Kingdoms' with SEGA and 'Asset-based Million Arthur' with Square Enix. A Singapore subsidiary runs 'SG Verse' on Oasys, extending the firm's geographic footprint into Southeast Asia. The investment approach is concentrated: the firm takes active operator roles rather than passive portfolio positions, deploying technical teams directly into the games and protocols it backs. The founding team remains small and executive-led, with Ueno as CEO and Tamaya serving as Advisor to double jump.tokyo and Executive Supervisor of Oasys. The Singapore subsidiary gives the firm a second regulatory jurisdiction for token launches and regional partnerships. In 2024, the firm deepened its relationship with Sony Group Corporation through the Soneium blockchain initiative, marking Sony's most significant public blockchain infrastructure move (per public announcements, 2024). double jump.tokyo is a member of the Japan Blockchain Association and the Computer Entertainment Supplier's Association, anchoring its position within Japan's regulated digital-asset ecosystem. During the COVID-19 pandemic, the firm participated in the #CryptoAgainstCOVID initiative alongside Binance Charity. The structural differentiator is vertical integration of IP, development, and chain. Unlike venture funds that write checks into gaming startups, double jump.tokyo builds the layer-1 infrastructure those games run on, then develops first-party titles and provides the technical consulting that external studios require to launch on the same chain. This makes the firm simultaneously a game developer, a blockchain protocol team, a strategic partner to Sony, and a seed-stage investor — a hybrid architecture that positions it at the center of Japan's regulated blockchain gaming vertical.
General information
Firm type
Corporate Investor
Year founded
2018
AUM
Undisclosed
Location
Region
Asia
Country
Japan
City
Tokyo
Corporate office
Tokyo, Japan
Additional offices
Singapore
Principals
Hironobu Ueno
CEO and Founder
Naoto Tamaya
Advisor and Founder; Executive Supervisor of Oasys
Sector focus
Frequently asked questions
Who runs investment decisions at double jump.tokyo?
Investment and operational decisions sit with CEO Hironobu Ueno, who co-founded the firm with Naoto Tamaya. The firm does not operate with a separate investment committee structure — Ueno leads both the gaming studio operations and the capital deployment, while Tamaya oversees the Oasys blockchain architecture. This concentrated executive structure keeps decision velocity high but also concentrates key-person risk.
What is Oasys, and how does double jump.tokyo relate to it?
Oasys is a proof-of-stake layer-1 blockchain optimized for gaming, built using an EVM-compatible architecture. double jump.tokyo serves as the core development team behind Oasys, with Naoto Tamaya acting as Executive Supervisor. The chain's validator set includes SEGA, Square Enix, Ubisoft, and Bandai Namco — major gaming companies that double jump.tokyo cultivated as partners. This gives the firm influence over the ecosystem's technical roadmap while it also builds first-party games that launch on the chain.
Is double jump.tokyo a venture fund or an operating company?
It operates as a hybrid. The firm makes early-stage seed and startup investments in blockchain gaming projects, but it also functions as a game developer, NFT solutions provider, and blockchain infrastructure team. This distinguishes it from a pure venture fund — double jump.tokyo typically embeds its own engineers and production resources into the projects and protocols it backs, rather than acting as a passive financial sponsor.
How does double jump.tokyo source its deals and partnerships?
Deal flow comes primarily through direct relationships with major Japanese entertainment and gaming companies. The firm has publicly confirmed partnerships with Sony Group, SEGA, Square Enix, and Ubisoft, as well as a co-investment relationship with Animoca Brands. By controlling the Oasys blockchain infrastructure and maintaining membership in industry associations like JBA and CESA, the firm sits at a bottleneck in Japanese gaming's blockchain adoption — projects that want major IP partnerships or validator access often route through double jump.tokyo.
What is double jump.tokyo's relationship with Sony?
Sony Group Corporation is a strategic investor and business partner. In 2024, the two entities announced the Soneium blockchain initiative, which marks Sony's most significant public move into blockchain infrastructure (per public announcements, 2024). The exact governance structure between Sony and double jump.tokyo for Soneium is not fully disclosed, but the partnership suggests Sony sees double jump.tokyo as its primary blockchain infrastructure partner in the Japanese market.
Does double jump.tokyo have a Singapore presence, and what is it used for?
Yes. double jump.tokyo has a subsidiary in Singapore, which it uses to develop and launch projects like 'SG Verse' on the Oasys platform. Singapore provides a separate regulatory environment for token launches and serves as the firm's entry point into the Southeast Asian gaming market, which has higher blockchain adoption rates than Japan for certain game genres.
What investment stages does double jump.tokyo target?
The firm concentrates on the earliest stages — seed and startup — within the blockchain gaming vertical. It does not appear to have raised external blind-pool venture funds in the traditional sense. Instead, capital deployment appears to come from the firm's own operating revenues, strategic partner contributions, and token treasury management across the Oasys ecosystem, although exact capital sources are not publicly disclosed in detail.
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.
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