Where's that online strategy game again?

Some of guys hopefully remember it. There used to be a large thread here about this addictive game. You solve puzzles to reach the next stage. The large stage was moving these columns around. One stage was moving the floor so the mouse couldn’t move. Another was trying to piece a puzzle so the door could open for the next stage. You move around the rooms and when you click something, the game with either say, “Nothing special” or anything else that will recognise what you are trying to do. I remember alot of people were addicted to it and posted their scores. I want to play it again, you remember the url?