Jonathan Tweet
Author · 11 books
Tabletop game designer, children's science communicator. Grandmother Fish was a labor of love for 15 years.
Books
13th Age 2e
Heroes' Handbook
2026
Over the Edge
1992
Over the Edge
A Roleplaying Game of Weird Urban Danger
2019
Miniatures Handbook
2003
Ars Magica
The Art of Magic
1996
Grandmother Fish
A Child's First Book of Evolution
2015
Ars Magica, Fifth Edition
1989
Player's Handbook
Core Rulebook 1
2001
Dungeons and Dragons Core Rulebook 1 Players Handbook
2001
Ars Magica, Revised Edition
2023
The Broken Covenant of Calebais
2004
