From the publisher (Skortched Urf' Studios):
Games can sometimes feel constrained when running a straight "store-bought" adventure. The other end of the spectrum isn't much better, since the GM has to be ready for any decision the players make. (And my players take a special delight in throwing as many curve-balls my way as they can!) Lack of preparation can lead to games that just aren't as much fun; so to address that, Skortched Urf' Studios introduces: Adventure Blocks!
Adventure blocks take all the components of a typical adventure or campaign, and breaks them out into Blocks. Mix-and-Match various Blocks and you can create any adventure you want on-the-fly while still having the entire encounter statted' out with descriptions and various ideas for implementing it in your game. Everything you need to keep your adventure running smoothly!