Logic Puzzle Collection: Sudoku, Permudoku, Nonodoku

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This collection bundles three brain-teasing puzzle games into one. Sudoku challenges you to fill grids with numbers while Permudoku swaps digits for colors you rearrange by swapping tiles. Nonodoku lets you solve pixel-art puzzles by decoding numerical clues to reveal hidden images. Each mode has five difficulty tiers with 100 puzzles apiece totaling 1000 challenges. The rules are explained clearly but the real test is your patience as you work through increasingly complex patterns. The standout is Permudoku's color-based twist which adds a tactile swap mechanic missing from standard Sudoku. Nonodoku’s satisfaction of watching pixel art emerge from solved rows gives it extra charm. With no multiplayer or time pressure this is pure logic practice for Switch owners who prefer quiet mental workouts. The sheer volume of puzzles ensures hours of play but the difficulty curve can feel punishing at higher levels.