Boxes
In city trial mode, when those boxes appear in different colors they contain only certain types of items. The colors are BLUE, RED, and GREEN. Please see below...
BLUE:
Blue boxes contain power ups for your bike/star
RED:
Red boxes contain powers (like when kirby sucks enemies in). Also this is really helpful to noobs! Only red boxes contain the 6 different peices to make the Hydra and Dragoon
GREEN:
Green boxes are much like the red, only no ship parts and only weapons, not abilitys. Red boxes may contain the sword kirby POWER, and the gree may contain a bomb, or cannon of sorts
Hope I helped
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