Playful Thinking is a 4-book series with 5 primary works first released in 2013 with contributions by Jesper Juul, Greg Costikyan, Katherine Isbister, Marcus Carter, and Geoffrey Engelstein.
2013 • 6 Readers • 157 pages • 4
2016 • 6 Readers • 192 pages • 4
2022 • 1 Reader • 152 pages
2013 • 6 Readers • 141 pages