A story on paper:60

[The Kakama]

open D

Jackpot.

Although none of them can help you get out of the room, they could be useful later.

[bender]

Find (or make) something to use as inventory.

[Rooster5man]

Clean out the materials you find in D, then search E.

[The Kakama]

Find (or make) something to use as inventory.

You already have the portable container clipped on you.

Clean out the materials you find in D, then search E.

You do so. You now have :
2 electric cords
Circular device
Cube with an in-built speaker
You check E:

You find a grappling hook/gun, maybe it can be used for climbing, or escape.
Then you search F:

It's empty except for another circular device.
You collect all the items; so your inventory looks like this:

Now you can get out here.(although you might want to try combining the items you have)

[Vortex]

WOW, it really looks like a game on paper

Command: examine the circular devices, and check if the cube with speaker can be inserted in B.

[The Kakama]

and check if the cube with speaker can be inserted in B

Huh? I have no idea what you mean.
Clarify please.

[Vortex]

Didn't B had the "insert cube" inscription? And there's seemingly a "cube with an in-built speaker" in the inventory.

[The Kakama]

Didn't B had the "insert cube" inscription? And there's seemingly a "cube with an in-built speaker" in the inventory.

You probably didn't read this:

The words on the screen thingy (under the button) say "insert cube".

See the picture again.
Anyway, you try to fit the "cube with an in-built speaker" into the screen thingy, and it doesn't fit. Only the dark cube can fit in, and anyway the screen thingy needs a power source.

examine the circular devices

Ok. You take one, then flip another and put it on your hand, so you can see the front of one circular device, and the back of the other.

They look like speakers, or microphones.

[The Abacus]

If possible combine the cube, electrical cords and circular devices. Then reexamine the metal arm thing coming down from the ceiling

[The Kakama]

If possible combine the cube, electrical cords and circular devices.

You're getting close, but not quite. There is no where to connect cords to both cubes, but you CAN connect the cords to the box with blue light and the screen thingy.(by the way, there is a button you can press on the cube with speaker)
As for the circular devices, you can't do anything about them for now.

Then reexamine the metal arm thing coming down from the ceiling

As stated before, it's just a solid chunk of metal. You can't move it or adjust it or anything.
(Keep posting commands, I'll post an update tomorrow.)