The expansion adds one player and 55 cards to the game. Here is a description of the expansion from the publisher:
The Game of Inauspicious Incidents and Grave Consequences
In the Gloom card game, you make your eccentric family of misfits suffer the greatest tragedies possible before helping them pass on to the well-deserved respite of death. Just mix the 55 transparent cards in this set together with your copy of Gloom to add morbid new Modifiers, Events, and Untimely Deaths, and a new family of intrepid explorers who've faced misfortune across the globe. These days Colonel Bumpersnoot is really more of a bargain hunter, while Lady Bumpersnoot struggles with high society -- but she always loves to have guests for dinner. Their Towering Treehouse is included as a Residence card to use with the Unhappy Homes expansion.
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