Mark Seifter
**Mark Seifter** is a Pathfinder Society GM, former co-Venture Lieutenant of the Boston Pathfinder Society lodge, and published third-party designer for Rite Publishing. As a Paizo community member, Mark also authored several class guides. On June 16, 2014, Paizo Inc. announced that Mark had been hired to the Pathfinder Roleplaying Game design team.
Books
Starfinder: Core Rulebook
2017
ISBN 9781601259561
Pathfinder Playtest Rulebook
2018
ISBN 9781640780859
Core Rulebook
2019
ISBN 9781640781696
Pathfinder Roleplaying Game: Strategy Guide
2015
ISBN 9781601256263
Monster Codex
2014
ISBN 9781601256867
Pathfinder Roleplaying Game: Bestiary 5
2015
ISBN 9781640780507
Pathfinder Core Rulebook
2019
ISBN 9781640781689
GM Core
2023
ISBN 9781640785588
Almanach der Ozeane
2017
ISBN 9783957525901
Pathfinder Gamemastery Guide Pocket Edition
2021
ISBN 9781640783218
Pathfinder RPG: Dark Archive Special Edition (P2)
2022
ISBN 9781640784444
Treasure Vault
2023
ISBN 9781640784970- No cover
Pathfinder 2 - Zeitalter dVO: Der Große Basar
2022
ISBN 9783963318290 - No cover
Pathfinder 2 - Zeitalter dVO: Legenden
2021
ISBN 9783963313776 
Pathfinder RPG: Pathfinder Player Core (2nd edition)
2023
ISBN 9781640785564- No cover
Advanced Player’s Guide
2020
- No cover
Pathfinder 2 - Monsterhandbuch 3
2021
ISBN 9783963316685