At this level you'll get the Expanded Hardcover edition of the Downcrawl rulebook. It's not just a thicker cover: this version includes 30+ pages of bonus material, including a chapter on worldbuliding ideas to steal and remix, an extended example of play, and a collection of ten fully fleshed-out Volumes to explore, including intriguing places like the Buried Library (an ancient archive under sand), Bleakport (a dying town at the edge of a cursed underground sea), and The Eternity Stair (where time runs quicker the deeper you descend).
 

You'll also get a choice of two different cover designs for your hardcover rulebook*, the Downcrawl Deck, and all digital rewards.

* Note: you won't select your choice of cover now, but later on when you fill out your backer survey. Cover designs pictured are works in progress and may change from what's pictured here.

The "Story" tab of the campaign has more details on these items! Note also that shipping is not part of your pledge and will be collected post campaign in the Pledge Manager.