Pick a scene
Start from a flag, curtain, hammock, net, ropes, jelly or tear scene, choose the stage shape and a fabric.
Rope & Cloth Simulator
Flags in the wind, curtains, hammocks, nets, swinging chains and wobbly jelly — all real-time physics you can touch. Drag, slice and pin anything, draw balls and boxes in the way, then export the moment as a vertical, square or wide video.
Open Rope & Cloth Simulator →How to use the rope & cloth simulator
Play with it
Grab and throw cloth, swipe to cut, pin points, draw balls and boxes, and change wind, gravity and tearing on the Physics tab.
Export a clip
Press Record, perform your moves, then export the take — or just the next few seconds — as an MP4 with sound.
Tips for satisfying cloth clips
Vertical for shorts
The 9:16 stage exports at 1080×1920, ready for vertical video feeds. Pick the shape before you record.
Slow tears read better
Raise tear resistance a little and pull slowly: the rip spreads across the sheet instead of snapping at once.
Gusts make it alive
A flag with gusts around 70% ripples naturally. Turn the direction to make it stream up or down.
Recorded takes replay exactly
Everything you do while recording is replayed at a fixed time step, so the video matches what you saw — at any frame rate.
Use the tension view
Press T to colour each edge by how stretched it is and see where cloth is about to tear.
Same seed, same show
Scenes use a seed for gust patterns and jelly sizes. Share the seed and settings and anyone gets the same run.
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Rope & cloth simulator FAQ
What is this cloth simulator?
A free, real-time 2D physics playground for fabric, rope, chains, nets and soft jelly bodies. Cloth is a grid of points joined by springy links, solved many times per frame, so it folds, flutters, stretches and tears.
Is it free?
Yes. No sign-up, no watermark and no limits. It runs in your browser, with nothing to install.
How do I tear or cut the cloth?
Choose Cut and swipe across the cloth or rope. To tear it, keep Tearing on in Physics and pull hard with Grab, or play the Tear scene. Lower the tear resistance to make it rip sooner.
Can I make a video of it?
Yes. Open the Video tab, record a take or choose the next few seconds, and export MP4 (H.264 with AAC sound) or WebM in 9:16, 1:1 or 16:9 at 30 or 60 fps. Frames are rendered one by one, so the clip is smooth even on a slow computer.
What sounds does the video have?
Original synthesized sound: rips when cloth tears, snips when you cut, soft thuds on impacts and an optional wind bed that follows the wind. You can also export without sound.
Which materials are there?
Silk, cotton, canvas, rubber and paper. They differ in weight, how much the wind catches them, stiffness, stretch and how easily they tear.
Does it work on a phone?
Yes. Touch works like a mouse: drag to grab, swipe to cut, tap to pin. The stage and controls fit small screens.
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