It's a fantasy role-playing game.

DM: You are Percival de Rolo, a human gunslinger . You are the member of the famous group of adventurers. Previously, He calls out what he has to do to fix this and with no answer, he turns to leave. A light illuminates the next chamber.
DM: You enter the next chamber, where you see the interior of this structure is ivory-white bone and glass, with a blue hint, very much resembling the interior of a very naturally, beautifully-carved ice cavern. There is a stairway that ascends, as well as other hallways that lead out from the central nerve center of the lower floor of the main structure. As you walk into this central chamber, you see, ever so faintly, at the very top of the stairs, a pair of feet (footsteps) walk and disappear up the stairs.
Player: I'm going to charge after them.
DM: Okay. You go running up the stairway. (thud thud) You get to the top, and you can see at the very top of the stairs a dark wooden door with a dark iron rim and what appears to be a large hanger or handle or knocker bolted to it and it (thud) just closes as you come underneath the top of the archway and up the stairs.
Player: I knock.
DM: (doosh) Once?
Player: Three times.
DM: (doosh doosh) With each hit, you can hear the reverberation of the echo of the knock through a much larger chamber beyond. As soon as you release the actual door knocker, the door (thump-crash, creak) just creaks open ever so slightly into a very, very dark chamber. You can see very, very little in here, other than the basic outline of what looks to be a little bit of floor, some sort of a smooth, glassy surface that refracts just a little bit of light that makes it through what looks to be some sort of broken-up glass dome-type structure above you. You can't make out much beyond that. It's very dark in here.
