*** READ ALL THE INSTRUCTIONS!!! *** Simply Play in this Open Physics Playground - Make contraptions, build levels, spawn an army of Appels! (Scene 2 is less intensive on your PC) [Arrow Keys] to move Appel (or drag them with mouse) [Mouse] - Drag "anything" around [Space] - Toggle Bullet Time (edit while paused) [0-9] to spawn objects [A] - Spawn more Appels [X] - Deletes an object [F] - Fix a block in place / or constrain a pin [P] - Add / Remove a pin - or press while dragging to pin objects together [N] - Next scene [R] - Reset scene [G] - Cycle gravity modes [S] - Show sleeping objects This WILL lag with lots of objects... but it's extraordinarily fast and stable for a physics scratch engine - That's what I'm after! (stop project and press B to benchmark) Can you use this - absolutely, just give credit, and realize this is a pre-release and subject to lots of change!!! Change Log 19 Mar 2026 - v0.4 - Better constraints, Better drag in edit mode, better pinning, more scenes 14 Mar 2026 - v0.3 - Player physics changed... Better? 14 Mar 2026 - v0.2 - Added Incremental SAP broad phase with temporally coherent insertion sort for speed 14 Mar 2026 - v0.1 - Initial Pi-Day Alpha Credits Built with the help of the Goboscript Text to sb3 converter! - Super helpful thanks to @aspizu
Thanks to griffpatch for the original project Physics Playground v0.4. MATTER.JS is in Scratch
