Sagadoku by Staple Games is an Android puzzle game that combines elements of block puzzles and traditional saga games. With its unique level designs, this game provides a challenging yet entertaining experience that exercises your brain.

The objective of Sagadoku is to complete each level by achieving all the goals listed at the top. Players must place blocks into the 9x9 sudoku grid, being careful not to place blocks with an "X" as they are not removable. Blocks will be removed when a vertical line, a horizontal line, or a 3x3 box is completed of any colors. As players progress through the levels, they will encounter blocked off pieces that add an extra layer of difficulty.

Overall, Sagadoku is a fun and challenging puzzle game that will keep you entertained for hours. It is free to download and play, making it accessible to all Android users. If you enjoy puzzle games and are looking for a unique twist on the classic genre, Sagadoku is definitely worth trying out.