The fourth chapter in Mateusz Skutnik's legendary puzzle series, Submachine Zero is the shortest, but just as detailed and engaging as the others. In fact, if you'just started to get into playing "escape the room"-styled games, than this is a pretty good introduction to the Submachine concept. Using your mouse, click on the corners of the screen to move around, click on items to collect them, and look for places to use those items to open doors and solve puzzles. You can try the earlier chapters here - Submachine: Extended Version, Submachine 2: The Lighthouse, and Submachine 3: The Loop. Click here to see the other puzzle rooms in this series and as always, you can e-mail me at krisabel@gmail.com for clues and hints