E3: Microsoft and Sony unveil their new consoles
Microsoft and Sony have begun battling it out in their latest fight to become king of the games console.
Both companies have launched new devices at the E3 games show in Los Angeles.
Microsoft's Xbox One is an "all-in-one system" for games, television, films and music.
Sony's PlayStation 4 console is more focused on the gaming experience and is £80 ($100) cheaper.
Rory Cellan-Jones reports.