The 15.02 update added a “Reset Puzzle” button for any stuck puzzle (found in the pause menu). Use it sparingly – you lose any progress on that particular puzzle.
The PC release of The Room 4: Old Sins on Steam remains a benchmark for atmospheric puzzle games, praised for its "Overwhelmingly Positive" player feedback and its ability to turn a simple point-and-click interface into a deeply immersive, clockwork nightmare. The Room 4: Old Sins Complete Walkthrough [ENG] [Written] The Room 4 Old Sins v15.02.2021
You might ask: "If newer versions exist, why seek out this specific three-year-old patch?" For three reasons: The 15
The dollhouse acts as a central hub. Solving a puzzle in the Kitchen might provide a part for a machine in the Maritime Room or unlock the Garden. The Room 4: Old Sins Complete Walkthrough [ENG]