Submachine 4 is completely addicting adventure game fun.
Submachine 4 has even more puzzles to solve, even more locations to explore than ever before. The largest and most mind-bending of all the Submachine games, this one will have you tearing your hair out (in a good way!) trying to figure out what's going on. If you're looking for a real puzzle challenge, Submachine 4 is for you!

Mouse: Click on doorways and ladders to move around.
Click on inventory items to use them in key places.