"Mario Super Sluggers, known in Japan as Super Mario Stadium Family Baseball (スーパーマリオスタジアム ファミリーベースボール), is a sports video game for the Wii developed by Namco Bandai and published by Nintendo. It was previously known by the working title Super Mario Stadium Baseball. It is part of the Mario Sports series, and the sequel to Mario Superstar Baseball for the Nintendo GameCube. Mario Super Sluggers was released in Japan on June 19, 2008 and in North America on August 25, 2008."
Source: Wikipedia, "Mario_Super_Sluggers," available under the CC-BY-SA License.