Solve placement with 2 rules: each row, column, and region has exactly 2 stars; no stars can touch, including diagonally. Track progress and access from KrazyDad, featured in the New York Times.
(Free) lets users play puzzles with four skill levels. Features include showing incorrect answers in red and using smart buttons. Users can track progress, undo moves, and reset puzzles. Options allow customization of game settings.
Play puzzles by filling vertical or horizontal rows to clear them and earn points. Complete more rows for higher scores. Use drag-and-drop to create combos and eliminate multiple rows at once. Track progress and compete for the highest score.
Play puzzles on a 9x9 grid with pre-filled numbers. Fill the grid without repeating numbers in rows, columns, or 3x3 quadrants. Available without internet connection. No ads.
Solve puzzles with 1,000 unique handcrafted puzzles across four skill levels. Choose from standard, symmetrical, and patterned styles. Adjust color schemes. View incorrect answers in red. Track times.
Play Sudoku by filling a 9x9 grid with numbers 1-9. Choose difficulty levels for puzzles. Complete rows, columns, and 3x3 boxes without repeating numbers. Track progress and solve challenges to improve brain skills.
Play to fill the board with 9 different colors. Solve puzzles with 5 difficulty levels. Use full undo support. Mark answers or pencil marks with dual-keypad input. View beautiful graphics. No timers.
Move to create rows or columns that sum to 10. Clear the board by matching totals. Score points for successful combinations. Track progress and challenge yourself with increasing difficulty levels.
Solve puzzles with a 9x9 grid and 3x3 sub grids. Enter numbers 1 through 9 in each cell. Complete puzzles using logic without guessing. Access unlimited puzzles. Track progress across multiple difficulty levels.
Play a strategic board game on a 15x15 grid by placing X or O to form five in a row. Take turns with an opponent. Win by aligning five pieces horizontally, vertically, or diagonally.
Play three game modes: mode involves dragging blocks to fill rows or columns for elimination. Cancellation mode lets players remove adjacent squares of the same color.
Allows users to solve puzzles with customizable themes. Features include shaking for hints, move-by-move validation, and adjustable difficulty levels. Users can track progress and learn new solving strategies.