Fortnite may have finally peaked.

After months of significant month-to-month growth, Epic Games' juggernaut battle royale multiplayer shooter is finally slowing down, according to reports by the research firm SuperData

Although the game crossed the $1 billion mark last month, revenue only grew two percent from June to July, compared to seven percent from April to May, when the title generated $316 million in just one month. The slump in growth comes despite the release of new content for the game, Fortnite Season 5, which dropped July 5.

Overall, spending on digital gaming was down about 10 percent from June. Players spent $8.2 billion in July compared to $9.1 overall last month. Despite the downturn, overall spending in July actually increased three percent when compared to 2017, and the growth was buoyed by console sales, due in large part to Fortnite's continued success (it was once again the top-grossing title on consoles, where it is available on all major systems: Xbox One, PlayStation 4 and Nintendo Switch).

Elsewhere, Grand Theft Auto V — the highest-grossing title in any media of all time — experience a resurgence with its latest After Hours content. GTA Online enjoyed its highest-earning month of 2018 to date, second only to December 2017 for the game's highest month since its launch in 2013. 

Overwatch, Activision Blizzard's popular multiplayer first-person shooter, did not fare as well. The game suffered declining content sales across all platforms when compared year-over-year to 2017. However, there was an increase of monthly active users, thanks to a free-to-play weekend and the introduction of a new playable hero, Hammond the hamster. The first season of The Overwatch League, a competitive e-sport centered on the title, concluded in July with the Grand Finals at the Barclays Center in Brooklyn, which averaged more than 860,000 viewers per minute of the broadcast.

Rounding out SuperData's monthly report was No Man's Sky, which debuted last year to much criticism from fans for being incomplete and failing to live up to expectations set forth in promotion. With the release of the NEXT DLC, the game generated an estimated $24 million across all platforms and boasted over two million active players, a tenfold increase from June.