Flying Buffalo publishes Tunnels and Trolls and Mercenaries, Spies, and Private Eyes. It should be noted that the MSPE page on their website has not been updated since 1999, and the author of this page now believes the system to be out of print.

Tunnels and Trolls is a fantasy RPG. It is rather difficult to find.

Mercenaries, Spies and Private Eyes is an RPG for flinty mercenaries, suave spies, and gumshoe detectives. It is also rather difficult to find.

While the author of this page has not played Tunnels and Trolls, she briefly played in a Mercenaries, Spies and Private Eyes game during her college years (1983-86) and found it quite enjoyable.