Dungeonland (EX1) is a 1983 adventure module for the Dungeons & Dragons (D&D) roleplaying game, written by Gary Gygax for use with the First Edition Advanced Dungeons & Dragons (AD&D) rules. It is an adaptation of Lewis Carroll's 1865 novel Alice's Adventures in Wonderland, with the various characters from the book translated into AD&D terms.
The EX module code stands for extension, as the adventure is designed to be inserted as an independent addition to another ongoing scenario. In Gygax's own campaign, an early version of Dungeonland was an extension of Castle Greyhawk. though, unlike Carroll's Alice, the player characters repeatedly face potentially lethal combat with monsters. The Cheshire Cat, for example, is a magical smilodon eager to eat adventurers. He noted that the module is designed to be inserted into any existing dungeon or dungeon level. Cowie praised the "excellent underlying theme" and the "whimsical", but on occasion "very black humour".
Robert E. James reviewed Dungeonland for Fantasy Gamer magazine and stated that "Overall, Dungeonland is an extremely good module. It was a very welcome addition to my world, and it can easily be added into any campaign. Keep the players in the dark about its purchase, and read the source. It's worth it."
Anders Swenson reviewed both Dungeonland and The Land Beyond the Magic Mirror for Different Worlds magazine and stated that "Given the limits of AD&D, this is not a bad job. The idea, of course, is not to rewrite Alice but to construct a fantasy role-playing game with encounters similar to those found in the two sourcebooks. And, with this perspective in mind, the two adventures succeed nicely. I would rate these two modules as excellent, certainly among the most imaginative adventures published in our hobby."
In Lawrence Schick's 1991 book Heroic Worlds, he said that the scenario was "inspired by Alice and Wonderland, but with the whimsy replaced by opportunities for slaughter".