Demos

The repository ships nine playable scenes, one per feature. Clone godot-softbody2d, open demos/demo_hub.tscn and press play, or run it directly:

godot --path . res://demos/demo_hub.tscn

Drag with the left mouse button to pull a blob around, R resets, Esc goes back to the menu.

#	Demo	What it shows
1	Joints	Squash, stretch and shear a blob: softness, joint reach, angular limits, yield strain.
2	Breaking	Weights, wall impacts and yanks, both break modes and interior strength.
3	Cutting	Slice with cut(); each piece keeps its own shape.
4	Scaling	Three blobs at bake_scale 0.6 / 1.0 / 1.6, landing together.
5	Joint stress	Every joint coloured by its load: how to pick a break_force.
6	Crush test	A slab presses a blob flat; readouts say how well it came back.
7	Edge fit	Particle size, shape type, edge_clearance, min_area, skin_smoothing.
8	Benchmark	Spawns softbodies until the frame rate gives, reporting bodies, joints and physics time.
9	Plasticity	The same blob elastic and as clay, side by side.

Everything is built in script at runtime, so the scenes are one node each and there is nothing to re-bake when the plugin changes; they double as worked examples of the API.

Demo 8 also runs unattended, which is how the numbers on the Physics engines page were measured:

godot res://demos/08_benchmark.tscn -- --benchmark-auto --interval=40 --reach=2 --ticks=60

Without Godot Rapier Physics demo 2 falls back to distance breaking and demo 5 colours joints by stretch; everything else is unaffected.