Backflip Studios filed a letter under the WARN Act notifying the state it was laying off employees.

BOULDER, Colo. — A mobile gaming studio has closed, causing 86 employees to be laid off in Boulder.

Backflip Studios filed a letter under the Worker Adjustment and Retraining Notification Act, or WARN Act, notifying the state it was laying off employees at 1690 38th St. in Boulder. The layoffs would take place around Dec. 23. Employees were notified on Oct. 23.

The layoff is the result of a permanent closure of Backflip’s office. Eighty-six employees were impacted, including data scientists, character 3D artists, build engineers and art leads.

Hasbro shut down Boulder-based Backflip Studios, according to posts on social media and reported by VentureBeat. Hasbro bought a 70% stake of Backflip Studios for $112 million in 2013.