B-Units Build It! is a casual mini-game compilation. The players play as the members of the building company. To construct a building, the players play a series of mini-games. There were 17 mini-games, each of which represents a particular construction process. The game consisted of NDS and Wii versions that were developed simultaneously.

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As I was the main game designer in the project, my responsibilities covered almost the entire design part such as designing the mini-game mechanics, controls, UI, game flow, items, town decorations, buildings, and town themes. I also wrote the game design document, level design, asset lists, and localization lists.