Coco Loco Block Blast is a block puzzle game. An adorable monkey needs the player's help with collecting colorful round-cornered blocks on boards that feature 8x8 grids. The player performs this task by creating eight-block lines using sets of polyomino shapes. They also attempt to earn the best score across all modes of play.
The game offers three classic block puzzle modes that are identical except each one has a different background theme. All the modes feature a sky and clouds on the backdrop. The Blue mode's button displays a yellow umbrella under a blue storm cloud and falling rain. During play, the monkey wears fitness or sports apparel. The Pink button has an icon of a sun peeking from behind a white cloud. The monkey wears a formal hat with a pink bow while holding its hands together to make a heart symbol. Lastly, Violet shows an airplane flying through a moonlit night sky.
In any mode of Coco Loco Block Blast, the game presents the player with the shapes in sets of three at a time below the board. The player arranges these pieces to form the horizontal and vertical lines. When they complete one or more rows or columns, the game removes the blocks and updates the score in the upper-center position next to a black crown. The player earns bonus points when they complete multiple lines at one time with a single shape.
After the player uses a set, they receive a new one. If they can't find room on the board for all three shapes at any given time, they lose. That said, they can continue without restarting if they watch an advertisement.