| Setting | Recommendation | | :--- | :--- | | | 0% (Black screen) – The background is pure distraction. | | Bullet Opacity | 100% (You need to see every pixel) | | Hitboxes | ON (Displays white outlines – essential for dense patterns) | | Screen Shake | 0% or 5% max (Default shake will disorient you) | | Flash Reduction | Maximum (Nightmare City abuses white flashes) |
Visit the level's page on the Steam Workshop and click "Subscribe" to download the files.
: It is often cited as a standout example of the "strong and dedicated community" that creates custom content for the game. Project Arrhythmia Background project arrhythmia nightmare city
Set in the year 207X [5], the level follows a glitch within the supercomputer HAL.
The level features unique, spooky boss fight elements, including a mysterious "stranger with a tie and droopy eyes" that follows the player, falling spikes, projectiles launched from eyeballs, and massive, dangerous hands. | Setting | Recommendation | | :--- |
| Mistake | Why it happens | Fix | | :--- | :--- | :--- | | | Visual overload | Close your eyes for 1 second – the rhythm alone tells you when to move. | | Staring at own ship | Habit from easier levels | Look 1–2 seconds ahead on the track. | | Moving too early | Anticipating beat, not reacting | Delay your input by a fraction – trust the audio offset. | | Hand cramps | Tensing up | Every 5 minutes, shake hands, drop shoulders. Breathe. |
While Project Arrhythmia is known for its "beautiful but deadly" aesthetic, "Nightmare City" pushes the boundaries of environmental storytelling. The level is less about simple dodging and more about surviving a decaying urban landscape built from pulses and blocks. Visual Identity Project Arrhythmia Background Set in the year 207X
: Due to the game's long early access period, different versions of the level may exist across different game branches (such as the "Legacy" or "Alpha" branches) to ensure compatibility with updated engine mechanics. Soundtrack
