Satoru Iwata said the people who made games were obsessed with things like better graphics, but forgot about making the games fun to play.

He warned that unless games were made more fun to play, people would get bored and give up their consoles.

He was speaking at the launch of the new handheld Nintendo DS.

He said the DS, with its touch screen and voice recognition, would inspire games makers to be more creative.

He thought the simple games from years ago were more fun.