Zone Pieces are items found in most Bomberman Land games, in general there are usually 25 of them per zones. Its usage depend on each games.
Bomberman Land 1[]
In this game, there are a total of 125 Zone Pieces, split into 5 colors (red, blue, yellow, green, and white), that's 25 Zone Pieces per color.
Bomberman Land Wii[]
In this game, Zone Pieces work differently, and are obtained after playing the attractions. The participants compete against each other to get the most pieces on a zone, and the best will be promoted to the next zone at the end of the 4 rounds.
A certain number of pieces is attributed to the player after they finish an attraction based on their rank. Once a rank have been achieved for a particular attraction, they can no longer get any pieces from it for the entire zone (all 4 rounds included); if a player finish for exemple the attraction with a Rank C, they will no longer get any more from it and the rank below (D, E), but still can get them from the next Ranks (A, B).
Zone Pieces are kept between the rounds of a zone, although, in rare case rules may be changed, and Zone Pieces may be completely reseted.