You will be cut off from everything, and you will fear for your mind in NASUBI, where your sanity hangs by a thread on an analogue rotary phone. Devoid of all personal effects, supplies or human interaction, you are imprisoned in a cramped, desolate room. This disturbing simulator is based directly on Susunu! Denpa Shōnen, the iconic Japanese reality TV experiment of the late 90s that stunned the world.
In this small place, every moment is a test of your psychological endurance as you try to find a method to connect with the outside world. The antique phone is your sole lifeline, and it’s up to you to deal with your solitude while you go through a frighteningly quiet environment. Every decision you make in NASUBI affects how well you can handle the pressure of being observed.

The gameplay is a mimicry of the tormenting truth of old broadcast tests, forcing players to feel actual psychological imprisonment.
You can play right in your web browser; however, it is better to download the desktop build to avoid slowness or sudden freezes during your survival run.
If you click outside the window and your mouse gaze breaks, just move your character back to the rotary phone and press the interaction key to fix the bug.
Today, push your mental limitations and enter the NASUBI room. Answer the phone, stare into the abyss, or test your survival skills in another thrilling challenge like Death Spiral.