reminds me of to original System Shock. I found a reference to the album Blue Oyster Cult in the "hand drawn" section and a possible reference to the 1927 silent film Metropolis in the blue city area that floods after you press a button. There is a central gong on a pedestal in a courtyard that looks just like the one in this game, and gets flooded in a similar manner.
Anyone else find any references?
Here is the flood scene from the movie: