Swarm is a game based on personality quizzes, telltale games (especially The Walking Dead, Game of Thrones, and Batman games), the old choose your own adventures series of books, and the Dungeon & Dragons Role Playing system.
Check out the wiki for more information.
Once cloned, you should do standard npm stuff. npm install is your first step. Then npm start to begin the app,
listening on localhost:3000 (this is using the webpack developer server).