Developer S-Game says its wuxia action game Phantom Blade Zero has sold 4 million copies within 72 hours of going on sale. The studio confirmed the milestone publicly, and the number arrived fast enough to rattle the usual expectations for a single-player action release.

The official X account posted the news with a short message: “Thank you everyone from the bottom of our hearts for all the love and support!” It was a simple post, but the figure behind it is hard to ignore.

The launch-day numbers were just as striking. Phantom Blade Zero sat ahead of some of Steam’s biggest games, including PUBG and Dota 2, and it topped the Steam charts as soon as it went live. It also became the best-selling game on Steam by revenue, outpacing Modern Warfare 4, Aion 2, and Probably Stolen, a Cyberpunk shopkeeper sim that is going viral right now.

Concurrent player numbers told the same story. Steam concurrents peaked on Sunday at 833,921 players, a figure that put the game in a different tier of attention than most releases manage in their first week.

None of this came out of nowhere. Last week, it was estimated that Phantom Blade Zero had already sold more than 1 million copies before launch. Those prelaunch sales spanned Steam, PS5, and Tencent’s WeGame, an online PC storefront in China. Nearly two-thirds of total prelaunch sales came from China, Taiwan, or Hong Kong, which tells you exactly where the early hype was building.

The reviews backed the hype. IGN’s review returned a 9/10, and the verdict was blunt enough to get attention on its own:

“Phantom Blade Zero is an unbelievably smooth action game filled with memorable boss fights, compelling combat, and limitless swagger.”

That kind of praise matters in a genre where players are quick to abandon a game that feels clunky. Boss fights and combat are the core promise of an action title, and the review suggests the game delivers on both. When a release is this heavily anticipated, strong critical reception tends to turn curiosity into purchases, and the sales curve here shows exactly that effect.

How it compares. Phantom Blade Zero is a monster hit, but it is not quite on par with Black Myth: Wukong, which managed 10 million sales in its first three days. That comparison is the one everyone in the industry will be making this week. Black Myth set a high bar for Chinese-developed action games, and Phantom Blade Zero is now close enough to that bar to make the question unavoidable.

The cast gives it a familiar face. Roger Craig Smith plays the lead character. Fans will know him from a long list of major roles, including Sonic the Hedgehog, Ezio Auditore, Batman, and Chris Redfield. He is joined by Maggie Robertson, who voices Mu Xiaokui. Robertson played Lady Dimitrescu in Resident Evil 7, another name that carries weight with horror and action fans.

Donnie Yen also has a major presence in the project. He served as a key creative consultant and stars as Mó Yuan, Soul’s father, through full facial, voice, and motion capture. That level of involvement from an established martial arts star helps explain why the game has drawn so much attention beyond the usual gaming crowd.

What comes next for players. Players heading into the Phantom World now have guides to help them along the way. A list of things the game does not tell you is already available, and a step-by-step walkthrough is in progress. Guides covering Weapons, Accessories, and Phantom Edges are also live, giving new players a head start on a game that is clearly pulling in massive numbers.

The bigger takeaway is the speed. Four million copies in three days is not a slow burn. It is a launch that moved from a strong prelaunch start to a record-level run in a matter of days, and it did so while competing directly with some of the biggest names on Steam. Whether the momentum holds through the coming weeks will show how deep the player base goes, but the opening numbers have already made Phantom Blade Zero impossible to ignore.