Bungie has hired former Rockstar developer Danny Bulla to work as "a gameplay designer on the sandbox team" for its new project.
Bungie said of Bulla on its official website: "He's doing some amazing work and, so far, he hasn't tried to lash any of us to a pair of railroad tracks."
Little is known of Bungie's new project, which is tied into a ten-year exclusive multiplatform deal with Activision, although it's rumoured to be an MMO styled action shooter.
The publisher said in February: "We continue to lay the foundation for our new universe from Bungie, one of the world's best developers.
"Bungie continues to make incredible progress on what we expect to be a genre-defining new IP that will provide us with tremendous new opportunities, and which remains one of our key strategic growth pillars for the future."