Principia, a physics-based sandbox game, has been released in version 2026.09.19.

The small update mainly brings bugfixes, including a fix for garbled synthesizer audio and for the Outdoor background not rotating with a Cam Rotator. The new --ignore-pipe launch option allows running multiple instances of the game at once.

• A couple of dialogs on Android have been replaced with their Imgui implementations. (Guard Point, Key Listener, Animal, Sandbox mode, Event Listener, New level)
• New Windows build pipeline (smaller binaries, 32-bit builds…)
• Add swipe-to-scroll gesture for touch input in Imgui dialogs
• Fix synthesizer audio being garbled on some platforms
• Fix robot manager reporting incorrect arm angles with touchscreen controls
• Fix Imgui prompt dialog not pausing the level
• Fix Outdoor background not rotating when a Cam Rotator is used
• Fix main menu logo showing up as a black box on old GLES devices
• Allow running multiple instances of Principia with --ignore-pipe
• Bundle CA store for HTTPS certificate verification on Android

Source: GitHub