Video game company Epic Games filed a federal lawsuit Monday accusing Google and Samsung of colluding to harm third-party app stores on smartphones running Google’s

The “Fortnite” maker claims the tech giants colluded to place onerous restrictions on app stores created after Google lost an antitrust case.

While it’s turned on, it automatically keeps users from installing apps unless they come from “authorized sources” — namely, Google and Samsung’s app stores. Epic claims there’s no process for any rival store to become “authorized.