Arey worked on games in the hit Crash Bandicoot and Jak and Daxter series, plus forthcoming PlayStation 3 exclusive Uncharted: Drake's Fortune. He held the title of creative director, as he will do at RAD - which was itself formed by former Naughty Dog staff and is best known for producing PSP spin-off Daxter.
"Naughty Dog and Sony were a wonderful ride, and it was an experience I'll never forget," Arey told GI.biz in an interview.
"Ready at Dawn reminds me of where we were at Naughty Dog about eight years ago... RAD and my philosophy about character and IP development match very well. Designing visually interesting, compelling, emotionally rich characters, tied inextricably to great gameplay, is something we both love to do."
Arey leaves Naughty Dog with some time to go before Uncharted hits the shelves, but said his work on the project was already complete when he made the decision to move on.
According to Arey, Uncharted will be "A great game... People will be happy they have a PS3 once they've played Drake's Fortune."