Saber Interactive’s recently released World War Z has sold over one million copies across all platforms, Focus Home Interactive today announced.

The third-person shooter title, which was announced in 2017 at The Game Awards, was released last week for PlayStation 4, Xbox One and PC.

World War Z draws its inspiration from the 2006 book of the same name and Marc Forster’s 2013 film adaptation, allowing players to partner up with three friends to make their way through the four-player co-op campaign.

Players also have the option to choose from six unique classes and arm themselves with different weapons, from explosives to traps, as they fight back against the zombie horde.

World War Z tasks players with completing campaign missions in locations across the world, ranging from New York City to Jerusalem to Moscow to Tokyo.

Outside of the story, players also have the opportunity to compete against zombies and other challengers in head-to-head multiplayer.

Hardcore Gamer had the opportunity to catch up with Oliver Hollis-Leick, the creative director on World War Z, back at E3 2018, in which he spoke about the importance of the title’s engine, Swarm Engine.

“We created an engine specifically for this called the [Swarm Engine],” he said at the time.

“This allows us to have the physics for the massive 500 zombie swarms. Each level will take about twenty minutes to get through.”

Matthew Karch, the CEO of Saber, was thrilled that the developer’s title had passed the milestone in the first week of its launch.

“Saber is extremely thrilled by the performance of the game on all platforms,” he said.

“On the PC specifically, we are performing way above expectations thanks to the support we have received from the Epic Games Store.

“Moving forward, we’ll continue to work on growing the game and its community with new improvements, stability updates and bonus gameplay content, beginning very soon with a special new mission for the Tokyo episode.”