Fortnite has been removed from the iOS App Store and Android’s Google Play Store, prompting developer Epic Games to sue Apple and Google. This is huge news, both because of the potential disruption to one of the world’s biggest games–Fortnite’s new season won’t be playable on iOS or Android as of now–and because of the fundamental way in which Epic is trying to disrupt how these mobile app stores operate. Below you can find a full explainer and rundown of everything we know so far. This will continue to receive updates as there are further developments.