They're already over their goal, so be on the lookout for broken stretch goals soon.
Source
From the campaign:
Darkfast Dungeons is a print and play tabletop game designed to provide a robust dungeon crawl experience in a couple of hours. Perfect as an introduction for kids or people new to tabletop gaming Darkfast Dungeons is also a great game for more experienced players with limited time or resources to devote to gaming. A typical dungeon crawl will last 2-3 hours and provide a unique adventure with each game played.