Night Trap was a Sega CD game. You were in control of cameras and traps situated inside a house, all you could do was check out the different rooms and activate the traps when needed. A bunch of Co-eds arrived at the house, and you had to save them from a bunch of kidnapping Ninjas by springing the traps on them. Now what was special is that the game was pretty much 100% video. If you sprung the trap at the right time it'd play the part where the ninja gets caught, if you did'nt you'd see the girl being targetted get kidnapped, and it looked pretty seamless.
The story was silly, but it was a fun and innovative game, I remember it being pretty hard hard.