Games and adventures
Published worlds from Siegebreaker.
Explore our core game lines and the adventures that expand them.
Gateways into Madness
A complete science-fiction and Mythos-horror RPG built on Chaosium’s Basic Roleplaying Universal Game Engine under the ORC License.
Shattered Worlds
A post-apocalyptic science-fantasy RPG where magic and technology coexist after a reality-shattering catastrophe.