TuDoKu

A 9x9 grid sets the stage. TuDoKu mixes a Sudoku board with falling-block logic, using polyomino pieces made of one, two, three, or four squares. Odd piece shapes leave awkward pockets across the 81-cell layout, pushing every placement toward tighter packing and longer survival. Full rows vanish. Filled columns do too. A completed 3x3 box also clears out, opening room for the next drop and pushing the score higher.

How to play?

Place the current shape anywhere it fits on the board, watching for stranded empty cells that block later pieces. With no valid spot left for the next tile set, the round ends. Twenty-five hints are available in a run for difficult layouts. Sound can be muted from the settings menu. Six color themes are included, with options such as Standard, Instagram, Night, and Light.