Human Fall Flat: Best settings.json for Fun Physics

The primary goal for Human Fall Flat physics optimization is Physics Step Consistency. Since every limb of your character is a separate physics object, “micro-stuttering” in the engine can make climbing and swinging feel unresponsive. This configuration focuses on disabling Vertical Sync and Ambient Occlusion, which often interfere with the engine’s ability to calculate “ragdoll torque” in real-time.

File Location

Human Fall Flat typically stores its persistent data in the Windows Registry or a JSON-formatted local file depending on the store version (Steam vs. Microsoft Store).

Steam Version (Registry): HKEY_CURRENT_USER\SOFTWARE\NoBrakesGames\Human Fall Flat

Microsoft Store / GamePass (JSON): %LocalAppData%\Packages\CurveDigital.HumanFallFlat...\LocalState\settings.json

Technical Configuration (The 2026 “Physics-Pro” Template)

If you are editing the settings.json or the Registry values, ensure the following parameters are set for the most responsive “fun” physics:

{
  "Graphics": {
    "Vsync": 0,
    "Fullscreen": 1,
    "TextureQuality": 0,
    "Shadows": 1,
    "AmbientOcclusion": 0,
    "AntiAliasing": 0,
    "Bloom": 0
  },
  "Input": {
    "MouseSensitivity": 0.5,
    "ControllerDeadzone": 0.1
  },
  "Physics": {
    "HighPrecision": true
  }
}

Parameter Breakdown:

• Vsync = 0: In a physics game, Vsync is your enemy. It introduces input lag that makes “grabbing” timing feel off. Disabling it allows the game to update your hand positions as fast as your CPU can calculate them.
• Ambient Occlusion = 0: This setting adds soft shadows in corners. While it looks nice, it can cause “shadow-hitching” when many physics objects (like boxes or planks) collide at once, leading to a drop in simulation speed.
• AntiAliasing = 0: Standard AA in this game can make the edges of grab-able ledges look “soft.” Keeping this off (or using FXAA) keeps the geometry sharp, making it easier to aim your hands during complex climbs.
• HighPrecision = true: (Available in newer 2025/2026 builds) This forces the Unity engine to use a higher frequency for the physics sub-steps, making the character’s grip feel more “solid” and less likely to glitch through walls.

Strategy for 2026 Physics Mastery

To get the most “fun” out of the physics engine without the frustration:

• The “Uncapped FPS” Rule: Human Fall Flat’s physics engine is tied to the frame rate more than most modern games. If you can push your FPS to 144 or 240, the “wobble” of the character becomes much more predictable, allowing for advanced techniques like “flick-climbing.”
• FOV Adjustment: Increase your Field of View to 90 or 100. This makes the character appear smaller, giving you a better sense of spatial awareness when trying to swing across large gaps.
• Disable Camera Shake: Inside the in-game “Extras” or “Settings,” turn off Camera Shake. This ensures your screen stays stable even when large objects are colliding, which is essential for precision platforming.
• NVIDIA Reflex “On”: If available in your 2026 driver, force NVIDIA Reflex to On for the Human Fall Flat executable. This further reduces the delay between your mouse movement and your character’s arm swinging.

Key Performance Parameters

Parameter	Recommended Value	Impact on Physics
Vsync	Off (0)	Dramatically reduces grab-input latency.
FPS Limit	Uncapped / 240	Smoother ragdoll transitions and swinging.
Shadows	Low / Medium	Prevents CPU spikes during heavy collisions.
Bloom	Off	Clears visual “fuzz” when looking at white surfaces.

Frequently Asked Questions (FAQ)

Conclusion and Expected Results

By disabling Vsync and Ambient Occlusion in your settings.json, you are prioritizing simulation speed over cinematic lighting. You can expect snappier grab responses, more consistent swinging physics, and a character that feels “lighter” and more responsive to your inputs.