Dungeon Delve Dungeons and Dragons 4th edition Wizards of the Coast
Dozens of dungeons ready to play without preparation...
Dungeon Delve(TM) is designed for groups looking for an exciting night of monster-slaying without the prep time. It contains dozens of self-contained easy-to-run mini-dungeons, or "delves," each one crafted for a few hours of game-play.
The book includes delves for 1st- to 30th-level characters, and features dozens of iconic monsters for the heroes to battle. Dungeon Masters can run these delves as one-shot adventures or weave them into their campaign.