Chapter 4 of Doors And Rooms is titled, Claustrophobia and features 10 stages. The theme for this grouping of rooms centers around ways to narrow your workspace. Wrong moves have dire consequences in this chapter and some of the levels feature iron maiden spikes, boiler rooms, concrete slabs and bank vaults.
As has been customary with each new chapter of Doors And Rooms, the graphics are even more rich and the puzzles have many more complex combinations that must be discovered and processed. By the time you finish with these stages, you are completely hooked and eagerly waiting the next update.