The Castle of Doom is run by two kindly old ladies who want to give valiant adventurers a little bit of excitement. You will be traveling in a round castle just chock-full of evil monsters and wonderful treasure. A special treat for you in this dungeon — the owners will keep things as they are if you choose to return to the Main Hall to heal up for a while! (Assuming, of course, you can make it out!)

Details at Eamon Wiki