Very good Game ! Loved the idea. I lost 1 or 2 minutes just playing with the floating boxes ^^.
Small feedback : the first thing I did was pulling the lever, opening the door and then there I go running around exploring & trying to click on everything. I totally missed the computer screen :s. it could be a good idea to attract the attention of the player to it (callback sound or even just text on screen). But maybe it's just my lack of sleep. so if I'm the only one giving this feedback, just ignore it. ;)
All In all, It is a very good game. I had fun playing.