| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1998 | 978-1-890305-02-4 | Mark Arsenault | Usagi Yojimbo Roleplaying Game (3rd Prtg) |
| 2004 | 978-1-890305-04-8 | Patrick Sweeney | San Angelo: City of Heroes 1.5 |
| 2000 | 978-1-890305-09-3 | Jason Prince · Mark Arsenault · Jared Smith | Monsters (Usagi Yojimbo) |
| '' | 978-1-890305-14-7 | R. Sean Borgstrom | Denizens of San Angelo |
| 2001 | 978-1-890305-26-0 | Mark Arsenault | The Legacy of Zorro Introductory Adventure Game |
| 2002 | 978-1-890305-41-3 | Anthony J. Bryant · Mark T. Arsenault | Sengoku |
| '' | 978-1-890305-50-5 | Anthony J. Bryant · Mark T. Arsenault | Sengoku, Revised Edition |