It's a free game. Not the greatest, but it's a decent game.
Gamehound
Spoilers
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1) Laser desk power. You need to get something from the file cabinet in the room with the laser desk. Once it is in your inventory, click on it with the hand icon and a new item will appear. Next, go to the room with the blackboard and use the new item on the video player. You will get the power supply shortly thereafter.
2) Once you power the laser desk, place the box on the laser desk and use it.
3) Body parts: a) arm in the cupboard. b) torso in the hanging fridge. c) leg in the freezer. d) head in the sleeping area. e) arm in the pipe (when there's a man in the glass tank later in the game). f) eyes in the sealed box. There is a "switch" on the top level of the floor in the sleeping area. You will need to press it to get the head.
4) Once you get the power supply for the laser desk, there are 2 items on the table under the blackboard. Go back to the room with the backup power unit. There is a machine to the left of the "left computer." Go there and use the sample dish you just found then use the ID card on it. That is your DNA requirement.
5) Voice-activated panel? I forget what this was.