The recently-released Call of Duty Modern Warfare sold almost five million copies digitally across PC and console during October.

That's according to research firm SuperData, which reports that the shooter sold 4.75m units between October 25th and the end of the month. That's an 11 per cent decline from 2018's Black Ops 4, with SuperData pointing out that Modern Warfare's predecessor was out for more days of the month. The game clocks in at the No.6 in the PC digital revenue Top Ten, too.

Apex Legends has generated $45m in spending during October, almost three times the $16m it made the month prior. The title appears in the console Top Ten for revenue spending, but does not make an appearance on PC.

New launch The Outer Worlds from developer Obsidian and publisher Microsoft was the ninth biggest revenue generator for October - not bad for an admittedly niche release.

Overall, revenue for October was down three per cent across PC, mobile and console, with a seven per cent increase on the mobile side of things offsetting declines on other platforms. 

Here are the top-grossing PC titles for the month of October:

1. League of Legends, Riot Games
2. Dungeon Fighter Online, Neople
3. Fantasy Westward Journey Online II, NetEase
4. Crossfire, Smilegate
5. Word of Warcraft, Blizzard
6. Call of Duty: Modern Warfare, Activision
7. Fortnite, Epic
8. World of Tanks, Wargaming
9. The Outer Worlds, Microsoft
10. Roblox, Roblox