It would be for people who already own Nightmare, and only for the people who contribute to the kickstarter, not for retail stores.
The money would go toward hiring an actor, an editor and to create the cards. The rulebook, box and video can be digital to save costs.
It would please older fans and if it gets enough interest afterwards, they can sell more in batches online.
This would be a relatively small side project compared to their new games where they pay for the CGI, voice actors, distributors, advertising, new physical game pieces and board etc.