I love playing Zendo, though ideally you want a group to build up competence at the same pace, so that everyone has a good idea of what level of difficulty is "just right".
Wow, the opening sentence contains the nonsense word "unsession" which makes it hard for me to read this, which is disappointing considering the source. However, this is the first time I've been exposed to "zendo", and it sounds interesting. However, as an individual with more than a passing interest in Zen Buddhism, I find the concept of creating a logic game using the words from the religion a little ironic, considering zen focuses almost exclusively on direct experience and illogical statement to break one free of delusions.