Sudoku Blocks is a block puzzle game designed with a traditional wood-block design that features wooden boards framing a 9x9 Sudoku-sized board that contains nine, brown, 3x3 subgrids. A player's primary objective is to earn as many points as possible by filling empty cells on the board to complete rows, columns and subgrids using polyomino shapes that show up below the board.
The player earns points every time the forms disappear from the board. They earn a higher score by completing combinations, such as removing more than one of the same or mixed completed rows, columns or subgrids at a time. Unlike similar games, they don't receive access to any boosters to help them win. They don't really need them. They're not required to use all three shapes to receive new ones. They can use two and then receive two more if the third shape won't fit on the board. They're also not required to beat a timer.
In Sudoku Blocks, the player must just keep earning as many points as possible until they run out of moves. The game then displays the polyomino shapes with a gray color instead of the normal light, yellowish-brown color. They can watch an advertisement to keep playing based on their current score or start again to try to beat their last best score.