No Exit 2: The Classroom Escape

Very good game for all who like to solve quite complex problems that can not be all of these! Today you will need to try to do everything to ensure that as soon as possible to find all desired items, and then just try to do something that you will open new doors or secret passages. Ordinary at first glance room for lessons, can not have a pretty normal thing in itself. What do you think will cope with such a difficult task?