tt.gifOne of the earliest hobby game publishers, Flying Buffalo, is the latest company to join DriveThruRPG and has made a short version rulebook for its classic Tunnels & Trolls game available for free download. Tunnels & Trolls, one of the simplest fantasy roleplaying game systems available, is particularly known for use in solitaire play. A number of Tunnels & Trolls out-of-print solitaire adventure modules are also now available for purchase as electronic products on the DriveThruRPG website.