Rare has added for new members to its senior team, with Jon Vincent, Danny Isaac, Peter Ridgway and Andrew Dennison joining in the past month.
"Everyone at Rare welcomes the skills and input of some of the industry's most exciting people as we boost an already strong talent base with these latest hires," said senior studio director Craig Duncan.
"We have big ambitions here at the studio, and industry professionals such as Andrew, Jon, Danny and Peter will help ensure we fulfil them. This is the latest step in Rare's continued evolution and we have plans to further augment our team over the coming months."
Vincent takes the role of audio director and arrives from Ubisoft Reflections where he worked on Driver: San Francisco, while Isaac, formerly of Relentless Software and EA, will become executive producer.
Dennison joins from Codemasters as software director, leaving his role as lead programmer for titles like Dirt 3. Ridgeway, also from Codemasters, has been appointed as technical art director.
"As a first party Microsoft studio, our mission is to attract the brightest and best talent in the business," added Duncan.
"These four appointments demonstrate that we are well on our way to achieving this."
In October a number of Rare veterans including Chris Tilston and Philip Dunne launched Starfire Studios.