Role-playing Games
Q&A for gamemasters and players of tabletop, paper-and-pencil role-playing games
Arqade
Q&A for passionate videogamers on all platforms
Meta Stack Exchange
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Worldbuilding
Q&A for writers/artists using science, geography and culture to construct imaginary worlds and settings
Japanese Language
Q&A for students, teachers, and linguists wanting to discuss the finer points of the Japanese language
Puzzling
Q&A for those who create, solve, and study puzzles
3D Printing
Q&A for 3D printing enthusiasts
Science Fiction & Fantasy
Q&A for science fiction and fantasy enthusiasts
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Stack Apps
Q&A for apps, scripts, and development with the Stack Exchange API
Politics
Q&A for people interested in governments, policies, and political processes
Board & Card Games
Q&A for people who like playing board games, designing board games or modifying the rules of existing board games
Stack Overflow
Q&A for professional and enthusiast programmers
Law
Q&A for legal professionals, students, and others with experience or interest in law