BACKROOM RUN

Every window is a corridor.

BACKROOM RUN is not a game in one window. Every window on your screen is its own Backrooms hallway, and all of them run forward at the same time. The one with hands is you.

Tab moves you one window to the right. The others keep running without you - whether you are watching or not.

• Cyan gems - only count if you are in that window when you pass them
• Red eyes - kill instantly, under the exact same rule
• Windows merge and split while you run

The further you get, the tighter the corridors, the more windows you have to keep track of, and the music climbs another step.

Controls

• Tab - next window to the right
• Any key - restart after death
• S shop, C channels
• - / + window size, Esc quit

Specs

• One executable. No installer, no runtime, no network access.
• 290 KB - made for the 1.44MB GAME_DEV CONTEST 2026: the whole game has to fit on a single floppy disk.
• Windows 10 / 11, no external libraries - raw Win32 and a software raycaster.
• Writes exactly one file next to the executable: A_DRIVE\SCORE.DAT. It never touches the registry or the network.

One more thing

This is a game that actually exists inside a story somewhere else. Run it long enough and the screen slowly starts saying different things.

Whatever you saw - you did not imagine it. Come to the Discord.

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AI disclosure - The C source of this project was written with an LLM (Claude). No generated assets are used: every graphic, sound, font glyph and level is computed in code at runtime. The executable contains no image or audio files at all.