Crypt Killer, also known as 'Henkaku no Serenade' in Japan, is an arcade-style light gun shooting game, which was ported to the Sega Saturn in 1997. Players embark on a fast-paced adventure through various crypts, facing an array of supernatural enemies such as skeletons, mummies, and other mythical creatures. The game stands out for its co-operative multiplayer mode and its 'choose your path' feature, which allows players to select different routes, leading to varied endings. The genre is a blend of first-person shooter and horror, a combination that was particularly popular in the late 90s.