Scene
Slalom
Ramps almost as wide as the track, alternating the side of the gap. Every ball slides down the same ramp and fights for the same hole on every floor.
Open Slalom in the editor
Parameters
The same controls as the editor, with the same range. The default is what the example page uses.
| Parameter | Range | Default |
|---|---|---|
| Track length | 20 – 200u | 60 |
| Racers | 2 – 8 | 4 |
| Gravity | 1 – 40 | 14 |
| Bounciness | 0 – 1 | 0.5 |
| Obstacle density | 0.4 – 2 | 1 |
How it usually ends
Measured by the engine with the default configuration over a fixed sample of seeds. No number here is an estimate.
- Seeds in the sample
- 40
- Escapes
- 100%
- Settles
- 0%
- Times out
- 0%
- Collisions (median)
- 156
- Duration (median)
- 19.2 s
- Climax (median position)
- 19%
- The fraction of the video where event density peaks. Close to 100% means the best moment is at the end.
Seeds that end well
The five best in the sample by the same heuristic the editor's search uses. Each link opens exactly this variation.
- seed2316383score 83 out of 100156 collisions19.2 sescapeOpen seed 2316383 in the editor
- seed2630570score 82 out of 100156 collisions19.2 sescapeOpen seed 2630570 in the editor
- seed745448score 72 out of 100157 collisions18.7 sescapeOpen seed 745448 in the editor
- seed1269093score 71 out of 100156 collisions19.1 sescapeOpen seed 1269093 in the editor
- seed12345score 71 out of 100157 collisions19.5 sescapeOpen seed 12345 in the editor
Frequently asked questions
How do I make a Slalom video?
Open the scene in the editor, adjust the parameters, try a few seeds and export to MP4. Rendering happens in your browser and costs nothing.
Why does the same seed always give the same video?
The simulation is deterministic: fixed-step physics and seeded random numbers. The same seed with the same parameters reproduces the same video on any machine.
How long is a Slalom video?
The video ends when the scene ends. The median duration measured in the sample is in the outcomes section, and the seed search shows each candidate's duration before rendering.
Can I use the video on TikTok, YouTube and Instagram?
Yes. The export is a vertical video with audio, ready for Shorts, Reels and TikTok. On the free plan it carries a discreet watermark.
How do I pick a seed that ends well?
Use the editor's seed search: it simulates dozens of variations without drawing and ranks the ones with a late climax. The seeds on this page came from the same heuristic.
Make your own variation
Open the scene in the editor with one of the seeds above, or let the search find another.
Open Slalom in the editor