After starting the game, you can press Escape for the menu. You can switch the game from fullscreen mode to (resizable) windowed mode, and the game will remember your preference.

After a short period of relaxation, you push the red button and enter a projected reality.

Try as you might, you can't pick up the junk off the floor. So let's ignore the chairs, the books, the coins, the tubes… all the tiny distractions, and focus on what you can pick up: the brass key on the floor beneath the clock. On the right, there's a phone with two dials, but nothing happens when you pick it up. On the left, there's a device with three levers and three lights on its front, and a handle that turns on a light on its left. Pick up the document on the ground for some lore. (While examining it, you can use the scrollbar to read the whole thing, and you can destroy it with the button to the left of its "the Evaluation" title).

Turn left to find a large golden device which has a four-legged box and a ring of 10 lights connected by red wire. A portal, perhaps? It's plugged into the wall. On the right, there's a panel with two screws (which looks like it's missing one) and a bluish unlit light over it. There are also two pipes with valve handles that do nothing. On the left, there's a panel on the wall with another unlit bluish light, two small white lights, and symbols that you recognize from the phone.

Turn left. Pick up the top half of the torn note from under the locked door. On the right, there's another two-screw panel under the pipe (that does nothing), a table with an empty drawer and a framed photo of Kaisar and a slider on the door that turns on the bluish light beneath it. (Finally, something you know how to use!) On the left, there's a weird red antenna that's unplugged, two pipes with useless valves and a device with unlit bluish and clear lights and a slot on its top.

Turn left to a screen with a large portrait on the wall. On the right, there's another two-screw panel, a large knob pointed away from you, a device marked with red dots that's missing a part, and another of those unplugged antennas. On the left, the bottom half of the torn note rests on a yellow tank that drains into a sink that doesn't work, and the panel on the wall can be removed to reveal a golden cog behind.

Since you moved the slider next to the door, the fourth antenna on the portal is now lit, and a spark connects it to one of the lights on the ring.

Use the golden key to unlock the large door. It opens up to… nowhere. There is no outside. You can't leave.

When you're done listening to the intense music, click on the doorway to return.

Playing around with the lever device, you find that the handle lights up the bottom row of lights according to which levers are down. Have we seen clues for this device?

Each of the panels that has two screws has a different screw missing from a set of three. Let's start with the one at the lower-right of the portal screen, which only has its right two screws in.

Go back to the lever device, flip the center and right levers down, and pull the handle.

The screw panel on the portal screen opens up, revealing some golden clockwork.

So place the golden cog inside, and the clockwork starts running, turning on the second panel antenna.

On the lever device, flip the left and right levers down (and the middle one up), and pull the handle.

Now the screw panel near the door is open, and you can flip the switch inside. What now?

Go back to the screen with the wall portrait. The knob on the right now faces you so you can pick up a lightbulb.

On the lever device, flip the left and center levers down (and the right one up), and pull the handle.

Now the screw panel near the portrait is open, and you can place the lightbulb inside to light it up.

If you check the portal again, you'll find that the fifth antenna is now activated.

Use the fuse on the red-dotted device to the lower right of the wall portrait.

Three of the dots turn green and a tray with a punch card slides out.

So place the punch card in the other device to the left of the door, which does some quick processing and lights up with a ding.

The middle (third) antenna on the portal is now activated.

Use the clues from the torn note halves to dial the phone.

The circle marked on the top half is the third one, so click the top dial twice.

The circle marked on the bottom half is the fourth one, so click the bottom dial once.

Then pick up the receiver, which gives off a loud hum and discharges some power into the wall.

That power ends up in the device on the left of the portal, and you can now turn its knob to activate the final (first) antenna.

With all the antennas turned on, the portal gives off a green disco ball of light. So click it to view the ending.