This is a billiard table with a twist. The disc rolls in a straight line, but it's also spinning. When it hits a wall, the spin phase at that instant decides the rebound — not the usual mirror bounce. Tiny changes ripple into wildly different paths.
Every line is its own color
Each straight stretch between two bounces takes the next of 240 colors from a golden-angle palette, light-painted onto a glowing trail. Pick a stroke style — solid, dashed, dotted — or let Mixed vary it line by line.
Feel every hit
When a line strikes the wall it throws a spark and a soft ripple that spreads past the edge — about three seconds of it. The collision isn't just seen, it's felt.
A happy, soft soundtrack
Slow pentatonic notes with gentle pauses — pitch rises as the disc nears a wall, a soft bell rings on contact, and the game cheers your near-misses and wins. Tap ♪ to mute.
Two modes
Demo — free play; paint glowing trails and tune everything. Target Game — drop a mark and try to make a line land on it. Switch them at the top-left.
Set it up in 4 quick steps
A little wizard walks you through it: boundary & look, size & start, aim & speed, spin & time — then a Review step to Launch. Jump between steps by tapping the numbers.
The Target Game
Step 🎯: tap to place your mark (small — 2–5% of the table). Then steps 1·2·3·4, then Start. A line only counts after 3 bounces, so it has to roam first. Land one and you win.
Pause any time — nothing lost
Hit ⏸ during a run to freeze the exact frame — disc, trail, clock and all — and ▶ to carry on from precisely where you were. Soon this is where you'll tap to learn what just happened.
It's secretly physics
Every bounce, curve and colour is real science — inertia, reflection, chaos, golden angles. Open 📘 Learn (top-right) for the concept library. Now — pick a mode and play.
Just now
Why
The rule
Feel it
A Playground of Motion
Kinetica.
Demo — free play; concepts whisper softly as it paints.
🎯1234✓
Place your target
Tap the table to drop your spot, then size it.
🎯 Target size4% · fair
2–5% of the arena — smaller is harder.
Tap the table to place your target.
Boundary & look
The arena and how each line is drawn.
Boundary
Circle weaves the chords into a rosette.
Line style
Every line is solid. Mixed varies it per line.
Line weightFine
Size & start
How big the disc is and where it begins.
Disc size9%
Diameter, capped at 15% of the boundary.
Start point
Position is randomized on each launch.
Aim & speed
Which way it launches and how fast it travels.
Launch direction
Travel speed3.0 cm/s
Spin & time
The spin rate that drives every rebound, and the run length.
Spin rate220 °/s
Run time45 s
Review & launch
Everything you set. Launch, or step back to adjust.