Sand, water and lava pile up in a falling-particle sandbox
18.6K views · 110 likes · 21 saves · 17 reposts · Posted Sep 25, 2026 · 0:44 · Art
OUR NOTEA vertical screen recording of a single-HTML falling-sand physics engine where streams of sand, water, lava and plants pour onto ramps and pool together as the particle count climbs past 78,000; the author cites 108,000 particles at 60fps.
🚨 Opus 5.5 is the best model launch in 2026
this entire physics engine is one HTML file.
sand, water, oil, fire, lava, plants, steam.
108,000 particles at 60fps.
built with Opus 5.5.
prompt in the replies 👇
follow @cyrilXBTTHE PROMPT
Partial prompt — the creator shared only part of it.
🚨 Opus 5.5 is the best model launch in 2026
this entire physics engine is one HTML file.
sand, water, oil, fire, lava, plants, steam.
108,000 particles at 60fps.
built with Opus 5.5.
prompt in the replies 👇
follow @cyrilXBTMAKE ONE LIKE THIS
Three steps, using what the creators in this index used.- 1 · Copy the prompt
Use the prompt above as your starting point, then change the subject and the style.
HOW OTHERS WROTE THEIRS → - 2 · Direct it like an editor
- Ask for one self-contained HTML file on a fixed 1920×1080 stage.
- Link this video as the reference for pacing and style.
- Send two or three rounds of specific notes.
- 3 · Render it to MP4
A short piece like this can be screen-recorded, or captured frame by frame for exact timing.
TURN AN HTML ANIMATION INTO AN MP4 →
The creator didn't name their tools. Most videos like this are HTML, canvas or SVG animation written by Claude and screen-recorded or rendered to MP4 — how that works.
Indexed Sep 30, 2026, 2:01 PM · Views as of indexing. Video and post © their creator.