From the introduction: Welcome to Blinsky’s Toyshop of Dread, a 5th Edition Dungeons & Dragons adventure. This adventure is designed for three to five 3rd –7th level characters and is optimized for five characters with an average party level (APL) of 5. The final battle may be deadly for characters below 5th level. Greater versions of creatures are included, allowing you to run this adventure with higher-level characters.