Not bad, but i couldn't get through the eye level, tho i found 3 cogs and put them into their places at the door, so i didn't finish it. It has some great music. The game lacks in customization capablities, like mouse sensitivity. Some cogs, like in the red area 1 of the cogs were unreasonably hard to find, and i often got stuck in corners with the enemies which deducted from enjoyability for me.