- Japanese Logic Puzzles: Different types of logic puzzles
- 1000 Jigsaw Sudoku: irregular Sudoku Puzzles
- Jigsaw Sudoku Variants: 5 different types of irregular sudoku puzzles for adults
- 450 Sudoku Variants: Jigsaw-Sudoku, Sudoku-X, Windoku, Girandola-Sudoku, and Argyle-Sudoku Puzzles (Variant-doku)
- Nonogram Puzzles: Hanjie Logic Puzzles for Adults