# Control the scene clock [Back to Use gameplay actions](https://rustic-game-engine.pages.dev/markdown/guides/gameplay-actions.md). The play scene advances actions once per frame using actual elapsed seconds, independent of script count and omitted `Update` callbacks. Play pause freezes the runtime; Stop discards its state. `Clock.timeScale(0.5)` slows actions, clip source clocks, physics and audio playback. `Clock.pause()` / `resume()` pause the scene clock while leaving script callbacks available to resume it. Per-operation pause freezes just that action. Audio voice pause freezes its source cursor independently.