ðɪs ɛkspˈænʃən ˈɔːlsoʊ ˈædz ðɪ ɐbˈɪləɾi fɔːɹ plˈeɪɚz tə tɹˈævəl ˌʌndɚnˈiːθ ðə mˈeɪn ɡˈeɪm bˈoːɹd, ɔːlbˈiːɪt wɪðˌaʊt ˌɛni ɐkˈʌmpəniɪŋ kˈæɾɐkˌoʊmz ɡˈeɪm bˈoːɹd.
This expansion also adds the ability for players to travel underneath the main game board, albeit without any accompanying catacombs game board.