GTMF 2026 has 20 exhibitors after a second batch of five was announced, plus seven media partners. The event is its 21st edition, set for December 2 in Osaka and December 8 in Tokyo, with free entry by advance registration.
GTMF 2026 is the 21st edition of the game developer tools and middleware show. It runs December 2 at Knowledge Capital Congres Convention Center in Osaka and December 8 at Akihabara UDX in Tokyo, both days from 9:30 to 18:30 with entry and exit permitted midway. Admission is free but advance registration is required, and visitor registration opened with the first exhibitor batch in September.
That first batch listed 15 exhibitors and showed the roster spanning platform holders, infrastructure firms, and audio and graphics middleware vendors. Toshiba, SoftBank, and Khronos Group joined as new participants. Exhibitor applications stayed open through the end of September, and the organizer is listed as Idea Co., Ltd. alongside CRI Middleware Co., Ltd.
A second batch of five in mid-October brought the total to 20 companies. ThinkingData and Yamaha Corporation joined as Gold sponsors, with DynaComware, Diarkis, and Havok entering at Silver. Seven outlets and events also joined as media partners: Famitsu, 4Gamer.net, AUTOMATON, GAME Watch, Game Makers, GAME FUTURE SUMMIT, and GameBusiness.jp. The media partner roster now includes outlets and event brands that normally compete for the same developer audience.
An After Party at both venues is to be detailed later. What the two announcements settle is the shape of the event: a free, two-city format with a 20-company floor and a media partner list that reaches beyond a single trade audience.
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Facts
- Announced
- a second batch of five exhibitors, bringing the total to 20 companies · 2026-10-14
- Announced
- seven outlets and events join as media partners · 2026-10-14
- Announced
- first 15 exhibitors · 2026-09-09
- Announced
- free visitor registration · 2026-09-09
- Noted
- runs Wednesday, December 2 at Knowledge Capital Congres Convention Center in Osaka and Tuesday, December 8 at Akihabara UDX in Tokyo, both from 9:30 to 18:30 · 2026-10-14
- Noted
- Admission is free but advance registration is required · 2026-10-14
- Noted
- runs December 2 in Osaka and December 8 in Tokyo · 2026-09-09
- Noted
- 21st edition · 2026-09-09
- Noted
- new participants including Toshiba, SoftBank, and Khronos Group · 2026-09-09
- Noted
- exhibitor applications open through end of September · 2026-09-09
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Oct 14
The GTMF Organizing Committee announced a second batch of five exhibitors for Game Tools & Middleware Forum 2026, bringing the total to 20 companies. ThinkingData and Yamaha Corporation join as Gold sponsors, while DynaComware, Diarkis, and Havok enter at Silver. The organizer is listed as Idea Co., Ltd. alongside CRI Middleware Co., Ltd. Seven outlets and events also join as media partners: Famitsu, 4Gamer.net, AUTOMATON, GAME Watch, Game Makers, GAME FUTURE SUMMIT, and GameBusiness.jp. GTMF 2026 runs Wednesday, December 2 at Knowledge Capital Congres Convention Center in Osaka and Tuesday, December 8 at Akihabara UDX in Tokyo, both from 9:30 to 18:30 with entry and exit permitted midway. Admission is free but advance registration is required, and an After Party at both venues will be detailed later.
Sep 9
CRI Middleware and IID announced the first 15 exhibitors for GTMF 2026, the game developer tools and middleware show, and opened free visitor registration. The event runs December 2 in Osaka and December 8 in Tokyo, its 21st edition. The sponsor roster spans platform holders, infrastructure firms, and audio and graphics middleware vendors, with new participants including Toshiba, SoftBank, and Khronos Group. Exhibitor applications remain open through the end of September.