https://wccftech.com/developers-at-epic-games-reportedly-suffering-from-extended-crunch-following-fortnites-explosive-success/

Crunch time, defined as the interval of time when software developers (which is where crunch originated) keep their heads down to work extended times in order to complete a project’s milestone according to the mandated schedule, is notoriously one of the biggest work issues in the games industry.

It comes as no great surprise that the most popular game of the past two years, Epic’s Fortnite, is also powered by extended developer crunch time. The report comes from Polygon through anonymous sources of both current and former Epic Games employees.