2[a] is a puzzle video game for the Nintendo DS released in Japan on July 19, 2007, and in North America, Europe, and Australia in 2008.

In the beginning of the game's story mode, Cheerful White (Bomberman) and his friends are traveling by boat towards Bom-Bom Kingdom, a theme park owned by a magician known as Star Bomber.

The story mode follows Cheerful White as he explores the Bom-Bom Kingdom theme park, and takes part in its attractions.

In Story mode, players control Cheerful White in a theme park in a top-down perspective, where they search for items to unlock different zones and mini-games.

Battle mode features the traditional gameplay structure of the Bomberman series, where players are tasked with dropping bombs to break through walls in a maze that separate each other.