Murdle: 100 Elementary to Impossible Mysteries to Solve Using Logic, Skill, and the Power of Deduction (Volume 2)

Murdle: The School of Mystery: 50 Seriously Sinister Logic Puzzles

The Case of the Seven Skulls: 64 Wildly Wicked Logic Puzzles (Murdle)

Merry Murdle: 25 Fiendishly Festive Logic Puzzles (Murdle)

Murdle: 100 Elementary to Impossible Mysteries to Solve Using Logic, Skill, and the Power of Deduction (Bk. 3)

Murdle Jr.: Ready, Set, Solve! Solve Your Way Through 40 Puzzle Mysteries! (Murdle Jr. Puzzles, Bk. 2)

Murdle Jr.: Curious Crimes for Curious Minds (Bk. 1)

Bordergrams: 80 Secret Spy Connection Puzzles