A leaked document from the ongoing Epic Games v. Apple lawsuit appears to reveal the number of downloads that each free game offered on the Epic Game Store amassed, as well as the lump sum paid to each developer. The document was posted on Twitter by GameDiscoverCo founder (and former Gamasutra editor) Simon Carless, and the numbers run for nine months, from January to September 2019.

As usual with these sort of leaked documents, we can't speak to the absolute veracity of these numbers, but considering the sort of info that has to be prepared for large lawsuits, it's definitely plausible. Carless said that he obtained the document from the public Apple vs. Epic document repository hosted on the cloud content site Box.

The numbers themselves give a rare look into the cost of "free" games. For example, according to the document, Epic paid Warner Bros. $1.5 million to offer the Batman Arkham series as a temporarily free game on the Epic Games Store. Most of the fees are in the hundreds of thousands of dollars, including hit indie games like Subnautica and Celeste, though Metro: 2033 Redux was apparently given for $0.