Watch “Geheimcode 13 + 4 – Rechnen in rätselhafter Mission I Erklärvideo,” a how-to-play guide for Secret Code 13+4 from HABA on BoardGameVideo.

2012Jürgen P. Grunau
About Secret Code 13+4, from BoardGameGeek:
Designer
Jürgen P. Grunau
Artists
Stefan Fischer, Stephan Lorenz
Categories
Mechanics