Phantom Blade Zero is Steam's biggest launch of the year so far, selling over 4 million copies in three days - but it's still way off Black Myth: Wukong

Phantom Blade Zero studio S-Game has announced that its debut title has sold more than 4m copies in its first 72 hours on sale. The game's official X account broke the news alongside a celebratory message, though without providing a per-platform breakdown of copies sold.

"Thank you everyone from the bottom of our hearts for all the love and support!" the developer wrote on X.

Phantom Blade Zero is available on Steam and PlayStation 5, but the 4m figure also includes sales made on the China-exclusive Tencent WeGame PC launcher. Prior to launch, Alinea Analytics analyst Rhys Elliott estimated Phantom Blade Zero to have sold over 1m copies before it had even released.