The Ability Variations
Fat Goblin Games: Castle Falkenstein 1 (2017 PDF)

Babbage’s Engine
Fat Goblin Games: Castle Falkenstein 1 (2017 PDF)

Curious Creatures
Fat Goblin Games: Castle Falkenstein 1 (2016 )

The Feat Variations
Fat Goblin Games: Castle Falkenstein 1 (2017 PDF)

Firearms & Margarine
Fat Goblin Games: Castle Falkenstein 1 (2017 )

The Second Tarot Variation
Fat Goblin Games: Castle Falkenstein 1 (2017 PDF)

The Six-Sided Variations
Fat Goblin Games: Castle Falkenstein 1 (2018 PDF)

The Tarot Variation
Fat Goblin Games: Castle Falkenstein 1 (2016 PDF)

Variations on the Great Game
Fat Goblin Games: Castle Falkenstein 1 (2018 )

Spheres of Power: Expanded Options
Drop Dead Studios: Pathfinder 1 (2015 PDF)