Block Sudoku - relaxing puzzle

Block Sudoku takes the basic idea of fitting tetromino-like shapes into a grid and mixes it with Sudoku''s row-and-column clearing logic. You get a 9x9 board, and each turn three random block pieces appear below -- these can be single squares, L-shapes, T-shapes, or longer lines. Your job is to drag each piece onto the board with your finger, rotating them if needed, and try to fill entire rows, columns, or 3x3 sub-squares. When you complete one, it disappears and you get points. The loop is simple: place blocks, clear lines, keep the board from filling up. What''s actually happening is you''re scanning the board for gaps, mentally rotating pieces to fit, and deciding which piece to place first because the order matters. There''s no timer, which is nice -- you can stare at the board for a minute if you want. The satisfying moment is when you clear multiple lines at once with a single block placement, especially if it triggers a chain reaction where a row clears and then a column clears right after. That feels great.

The difficulty builds slowly. Early levels just teach you the basics with small shapes and lots of space. By level 20, you start seeing bigger pieces and more awkward shapes that force you to plan ahead. Some levels have names like "Tetris Fusion" or "Sudoku Sprint" that hint at the challenge, but the naming is mostly flavor. The endless mode is where the real grind happens -- the game just keeps throwing pieces at you, and your score is tracked. There''s a daily challenge that gives you a specific board layout to solve, which often requires using bonuses like the shuffle or the hammer (which removes a single block). Those bonuses are earned through daily gifts or bought with coins, and they''re useful when you''re stuck. Tournaments are just leaderboard races where you compete to get the highest score in a limited time, which adds a little pressure but nothing crazy.

Mechanically, what matters is learning to prioritize filling squares over rows, because squares give you extra points and clear more space at once. The game doesn''t explain this well -- you figure it out by losing a few times. Later levels introduce locked tiles that can''t be removed, which changes your strategy completely. You have to leave those alone while still clearing around them. The board starts feeling claustrophobic around level 50 or so, when the piece sizes get bigger and the available space shrinks. Hands-on, you''re dragging blocks with one finger, rotating by tapping, and sometimes undoing a placement if you mess up (there''s an undo button but it costs a bonus). The brain part is constant spatial reasoning -- looking at three shapes and a board and trying to see which order lets you survive another turn. It''s not frantic, but it''s not brain-dead either. The last few levels in the campaign are brutal, with dense boards and huge pieces, and finishing one feels like a real win.