Sleeper main office

In an effort to revitalize fantasy sports, Henry Leung, Ken Wang, Nan Wang, and Weixi Yen developed an app called Sleeper in 2018.

The Sleeper app is free from advertising and features a social media platform for chatting with other users.

In 2019, the company surpassed 1 million users and added fantasy basketball sports that same year. Using its Series B investment, Sleeper has launched a season-long fantasy League of Legends game for professional LoL circuits in North America, Europe, Brazil, Korea, and Vietnam.

Co-founder and CEO Nan Wang says that the company is negotiating with NASCAR and Penn National regarding creating a fantasy auto racing series.

Sleeper believes it can overcome the competition from ESPN and Yahoo by including women and be able to attract casual fans.

Sleeper maintains a corporate office in San Mateo, California.