Decode
The Underworld Issue, Exposed
By Mike Selinker
Dr. Sudoku Prescribes: Make Room for Tapa
By Thomas Snyder
Decoder Ring Presents: The Ring of Dishonor's Induction Exam
By Mike Selinker
Decoder Ring Presents: The Door Opens
By Mike Selinker
Decoder Ring Presents: The Ring of Dishonor's Rings of Dishonor
By Mike Selinker
Decoder Ring Presents: A Key to Using the Key
By Mike Selinker
Dr. Sudoku Prescribes: Chaotic Calcu-doku Puzzles
By Thomas Snyder
Decoder Ring Presents: The Key to Entering the Ring of Dishonor
By Mike Selinker
Decoder Ring Presents: Underworld Code #8
By Teeuwynn Woodruff
Dr. Sudoku Prescribes: Tournament Sudoku
By Thomas Snyder
Toynbee Tiles: A Mysterious Puzzle that Spans the Globe
By Eric Harshbarger
Decoder Ring Presents: Underworld Code #7
By Teeuwynn Woodruff
Decoder Ring Presents: Underworld Code #6
By Mike Selinker
Decoder Ring Presents: Underworld Code #5
By Mike Selinker
Decoder Ring Presents: Underworld Code #4
By Mike Selinker
Decode: Do This Puzzle and Revive a Lost Language
By Mark L. Gottlieb, Mike Selinker, and Teeuwynn Woodruff
Your Princess Is in Another Game: The MIT Mystery Hunt
By Michael Andersen
Decoder Ring Presents: Underworld Code #3
By Mike Selinker
Decoder Ring Presents: Underworld Code #2
By Teeuwynn Woodruff
Dr. Sudoku Prescribes: Digit Battleships
By Thomas Snyder
Decoder Ring Presents: Underworld Code #1
By Mike Selinker
Decoder Ring Presents: The Underworld Ring of Dishonor
By Mike Selinker