Rush Gaming Inc.
Japanese esports organization and gaming company founded in 2018, competing in Call of Duty and building a global esports brand.
Last updated September 27, 2026
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Overview
Rush Gaming Inc. is a Japanese gaming company and esports organization founded in 2018 by Aoi "GreedZz" Kobayashi, the well-known Call of Duty talent HASESHIN, and Ulara Nishitani. The company describes itself as being built at the intersection of competitive gaming, community activities, entertainment, and apparel. Its activities span esports team management, streaming, content production, player development, events, apparel, and community engagement, with the stated goal of winning championships, telling compelling stories in competitive gaming, and creating a world-class esports organization and brand. Rush Gaming currently fields a competitive Call of Duty team and is exploring opportunities in other game genres. The organization grew out of the "Rush" community and clan, with HASESHIN serving as founder of the Rush CLAN eSports Division and cofounder of Rush Gaming. GreedZz, a popular Japanese competitive player and streamer with a large YouTube following, serves as General Manager and cofounder. Ulara Nishitani, the CEO and cofounder, brought business experience from the gaming industry, including early involvement in the Japanese launch of Playfish and the founding of Wekids before taking ownership and leadership of Rush Gaming in November 2017. The company is privately held and based in Japan. Its management team includes Nishitani as CEO and representative director, and Kobayashi as a director. Rush Gaming positions itself as a young, ambitious organization aiming to compete at the highest levels of esports while building a strong team brand and nurturing talent.
History
Rush Gaming Inc. was founded in 2018 by Aoi "GreedZz" Kobayashi, HASESHIN, and Ulara Nishitani. The organization emerged from the "Rush" community and clan, with HASESHIN serving as the founder of the Rush CLAN eSports Division and later cofounder of Rush Gaming. GreedZz, a prominent Japanese Call of Duty player and streamer, became General Manager and cofounder, bringing competitive success in Japanese and Asian Call of Duty titles. Ulara Nishitani, who had studied in the UK during middle school and graduated from Keio University's Faculty of Economics in 2010, joined the Japanese branch launch of UK-based game company Playfish (acquired by EA in 2009) as its first employee. After founding Wekids in 2014, Nishitani became owner and CEO of Rush Gaming in November 2017, ahead of the company's formal establishment in 2018. The company was built as a new gaming company and esports organization at the intersection of competitive gaming, community activities, entertainment, and apparel. Its activities include esports team management, streaming, content production, player development, events, apparel, and community engagement. Rush Gaming currently fields a competitive Call of Duty team and is looking for opportunities in other game genres. The organization's stated goals are to win championships, tell compelling stories in competitive gaming, and create a world-class esports organization and brand where talent shines. As of its public materials, Rush Gaming is privately held and based in Japan. Its management team includes Nishitani as CEO and representative director, and Kobayashi as a director. The company continues to develop its team brand and expand its presence in the esports landscape.
- 2018
Rush Gaming Inc. founded by Aoi "GreedZz" Kobayashi, HASESHIN, and Ulara Nishitani.
- 2017
Ulara Nishitani became owner and CEO of Rush Gaming in November.
- 2014
Ulara Nishitani founded Wekids.
- 2010
Ulara Nishitani graduated from Keio University Faculty of Economics.
Products and positioning
A new gaming company and esports organization built at the intersection of competitive gaming, community activities, entertainment and apparel, aiming to create the world's best esports organization and brand.
Call of Duty competitive team
Rush CLAN community
Streaming and content production
Apparel
Sources5 sources
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