Ads for the Nintendo DS game, which launches across Europe on Friday (29 June), broke on Monday. Further TV executions, including vox pop-style ads and 90-second infomercials, will follow throughout the summer.
The spot shows Kidman at home playing the game, which involves tasks such as memorising numbers. She then reveals her 'brain age' at the end of the ad. The Moulin Rouge! star will also appear in print ads across Europe.
The release will be supported by substantial experiential and sampling activity through bd-ntwk. The games company is planing a National Brain Age Challenge, with mobile units travelling the country to offer consumers Brain Age Checks. It will also promote the game in gyms, shopping centres and garden centres, as well as events including The Retirement Show at Olympia.
More Brain Training is one of a growing number of games Nintendo is using to target a wider audience than gaming's traditional core of teenagers and young men.
Ads for the first Brain Training game were voiced by Who Wants to be a Millionaire host Chris Tarrant.