Merseyside-born Costello, born Declan MacManus, emerged on the back of the late 1970s UK punk rock movement with his band The Attractions, recording a string of successful albums including This Year's Model, Armed Forces and Get Happy.

BBC: The couple met during last year's Grammys

Over the past few months, there have been a string of online games turning to the free-to-play model to attract new players, and now a fairly big title is trying it on for size.

FORBES: Valve's Team Fortress 2 Goes Free to Play