Source
From the update:
Firstly, thank you all for your pledges and the fantastic support you have already given to the project :)
We are very close to reaching our target, because of you!
Stretch News
The first of the stretch goals has been unlocked, and every qualifying backer (keep level and upwards) will receive a plasticard firepit with their reward package, and I hope we will unlock several more too :) and you can now see the Dungeon Stairs piece!