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One chamber

I completed One Chamber in four days
To avoid bugs, the maps in the mod levels are different from those in the original levels and have an extra level of difficulty.
Don't worry about the frame rate, the FPS can reach 60+ or higher (unless the computer is too bad),
but the time will get longer when entering a new level, usually around 6 seconds
If you encounter any bugs during the game or my statements are not clear enough, please let me know