Oh, good point! I have some of this info in the doc, but having it on the description is better. To answer your questions:
- 2-5 players, no GM required, though i like to play 'facilitator' for my games
- average playtime: 2-3 hours for a session
- i personally like to play this game solo using the wyvernbound playbook, but i do not have any concrete rules for a solo mode (yet)
Thanks for your question!