Tips and Tricks

Asset Overlay

The files in asset_overlay located at ~/.var/app/org.vinegarhq.Sober/data/sober will get used over the ones used by Roblox. Depending on the directory the files were placed in, this will allow for modifications to be made! The modifications will happen after an app restart, and is reversable simply by clearing out the directory.

The asset_overlay directory mirrors packages/com.roblox.client/base.apk/assets when viewed through an archive manager. This means you have to recreate the folder structure as seen in the archive into asset_overlay in order for your modifications to work! Example of replacing the mouse cursor:

~/.var/app/org.vinegarhq.Sober/data/sober/asset_overlay
└── content
    └── textures
        └── Cursors
            └── KeyboardMouse
                ├── ArrowCursor.png
                ├── ArrowFarCursor.png
                └── IBeamCursor.png

Fullscreen

The toggle for fullscreen in the Roblox app has never worked on mobile builds. However, this can be replicated by pressing the F11 key.

Note that Sober remembers the fullscreen state, and will automatically fullscreen again on a relaunch. You cannot close Sober within the Roblox app as well.

FFlags

FFlags (or “Fast Flags”) allows for local configuration overrides for the Roblox client. This system was originally developed to be used by Roblox engineers to dynamically update engine configurations on the fly via. over-the-air (“OTA”) configuration updates rather than pushing an update to the client binaries every time.

Since September 2025, Fast Flags have since been locked down to a select few in a whitelist system. If a flag is not on the official allowlist, it will be ignored even if configured correctly.

Geometry Fast Flags

FFlag Name	Type	Description	Accepted Values
`DFIntCSGLevelOfDetailSwitchingDistance`	integer	Sets level of detail culling for CSG models in studs	0-1000
`DFIntCSGLevelOfDetailSwitchingDistanceL12`	integer	Sets level of detail culling for CSG models in studs (graphic levels 1 and 2)	0-1000
`DFIntCSGLevelOfDetailSwitchingDistanceL23`	integer	Sets level of detail culling for CSG models in studs (graphic levels 2 and 3)	0-1000
`DFIntCSGLevelOfDetailSwitchingDistanceL34`	integer	Sets level of detail culling for CSG models in studs (graphic levels 3 and 4)	0-1000

Rendering Fast Flags

If you intend to use the perfer Vulkan/OpenGL flags, we recommend running flatpak run org.vinegarhq.Sober config on your terminal and select the “Force Legacy Rendering” instead.

FFlag Name	Type	Description	Accepted Values (in range)
`FFlagHandleAltEnterFullscreenManually`	bool	Enables manual control for true fullscreen (is not relevant for Sober)	true/false
`DFFlagTextureQualityOverrideEnabled`	bool	Enables texture quality to be overrided by `DFIntTextureQualityOverride`	true/false
`DFIntTextureQualityOverride`	integer	Sets texture quality level. (`DFFlagTextureQualityOverrideEnabled` must be set to true first)	0-3
`FIntDebugForceMSAASamples`	integer	Force MSAA anti-aliasing sample rate	1; 2; 4
`DFFlagDisableDPIScale`	bool	Disables DPI downscaling (is not relevant for Sober)	true/false
`FFlagDebugGraphicsPreferD3D11`	bool	Prefers DirectX 11 for rendering (is not relevant for Sober)	true/false
`FFlagDebugSkyGray`	bool	Overrides the skybox color to gray, removes atmospheric stars	true/false
`DFFlagDebugPauseVoxelizer`	bool	Disables voxel lighting	true/false
`DFIntDebugFRMQualityLevelOverride`	integer	Overrides graphic quality level (does not affect render distance)	0-21
`FIntFRMMaxGrassDistance`	integer	Sets the maximum distance for grass rendering in studs	0-1000
`FIntFRMMinGrassDistance`	integer	Sets the minimum distance for grass rendering in studs	0-1000
`FFlagDebugGraphicsPreferVulkan`	bool	Prefers Vulkan for rendering	true/false
`FFlagDebugGraphicsPreferOpenGL`	bool	Prefers OpenGL for rendering	true/false

User interface Fast Flags

FFlag Name	Type	Description	Accepted Values
`FIntGrassMovementReducedMotionFactor`	bool	Reduces motion for grass	true/false

Keyboard shortcuts