Chaser
by PointOfPressure
Bloxstrap-style launcher for Sober (Roblox on Linux)
About
Chaser is the missing cockpit for Sober: switchable performance profiles, a curated risk-tagged FastFlag catalog, one-click presets, MangoHud and environment control, and automatic config backups, the launcher layer Windows players know from Bloxstrap, built natively for Linux with GTK4. Chaser checks every FastFlag against the Roblox engine's own symbols and against Roblox's allowlist, so it can tell you which of your flags are live, which the client silently ignores, and which were never real flags at all. Chaser never modifies the Roblox client. It edits Sober's own configuration surface, preserves everything it doesn't manage, and backs up before every change.
Permissions
1 permission weaken the sandbox. Flatsonar asks before installing.
- sandbox escape: can run commands on the host via flatpak-spawn
--talk-name=org.freedesktop.Flatpak - inter-process communication (needed for X11)
--share=ipc - Wayland display
--socket=wayland - X11 display, only when Wayland is unavailable
--socket=fallback-x11 - GPU acceleration
--device=dri - access to ~/.var/app/org.vinegarhq.Sober
--filesystem=~/.var/app/org.vinegarhq.Sober
Who publishes this
Nobody has confirmed that the publisher controls this app id. Flatsonar warns before installing.
- org.chaser.Chaser claims the domain chaser.org; only its owner can prove that
publisher:namespace - the build has network access: it can download things the manifest does not list
build-options:--share=network
Maintenance
Recent activity on the upstream repository, or built and reviewed by Flathub.
No staleness signals: recent activity, or built and reviewed by Flathub.