- Variety Puzzle Books for Adults - 400 Normal Puzzles 9x9: Sudoku Consecutive, Consecutive X, Consecutive Jigsaw, Argyle Consecutive
- Variety Puzzle Books for Adults - 400 Hard Puzzles 9x9: Killer Sudoku, Killer Sudoku X, Killer Sudoku Jigsaw, Argyle Killer Sudoku (Volume 17)
- Sudoku Minesweeper Battleships - 200 Hard to Master Puzzles 12x12 (Volume 6)
- Straights Puzzle Books - 400 Easy to Master Puzzles 6x6 (Volume 2)
- Straights Puzzle Books - 400 Easy to Master Puzzles 7x7 (Volume 3)