BE WARNED - for this game is completely different than "submachine2: the Lighthouse" seen here lately. This time there is no inventory, no items to collect, only the mean machine and its puzzles. Try to escape from the endless, timeless loop of rooms, if you can do that then you'll be one step closer to the Lab, which will be submachine4 main playground. And it will be more similar to submachine2, because the Loop is much of one-time experiment. Anyway - enjoy.