Just a month and a half after publisher Epic Games moved to make its games, including Fortnite, available on third-party app stores, it's now suing tech giants Samsung and Google over access to those storefronts.

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

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.