A gamer who goes by the name Diego Knyte, real name David Harr, has spent an awful lot of time - 10 hours to be precise - designing the xBot.

The "game controller button-masher-robot" is designed to rack up points for the game Perfect Dark Zero.

He's achieved an additional 60 Xbox Live gamer points by using the robot, which played through 1000 Death Matches and 1000 Dark Ops rounds for him.

He won't reveal all of his design secrets, but the device operates two pins that hit the action keys, or in more official terms, "two rotational solenoids driven by a Transistor to Transistor Logic controller".

Clever. Very very clever.