Jindo Tidal Rush
A Jindo dog runs a coast, a bamboo ridge, a volcano, a glacier and a neon city. The course is one curve; loops, wall runs and corkscrews are all that curve's up vector turned. Five acts, 10.4 km end to end.
Play it here
Press the button and it runs inside this page. Nothing is downloaded until you do, so reading and leaving costs you nothing. No install, no sign-in.
Who it is for
Time-attack players who rerun a course hunting for the line that keeps their speed
What it does
- Five acts, each with its own sky, fog, water and terrain materials
- An 84 m teardrop loop, corkscrews and vertical wall runs all share one movement path; the loop is wide at the bottom so it turns you over slowly on the way in
- Three ocean rails you can switch between without losing speed
- Six airborne targets linked by a chained dash
- Waterfall launch, a collapsing bridge and breakable crates
- Save a nickname, submit a finished run, and it lands on that act's top-20 board. A nickname is a display label, not an account
- On a phone you drag to steer and tap to jump; the throttle is automatic
- Four checkpoints per act
- Every act carries its own track: five pieces with different tempos, scales, chord movement and lead waveforms, each grown from a per-act fixed seed so the same act always sounds the same
- Ten sound effects come from a single synthesiser. Wind tags cycle through four notes so a run of pickups never repeats a pitch, and a chained dash rises a semitone per link
- No third-party assets: terrain and music are generated at startup; the character and props come from Blender scripts run at build time
- A headless regression suite of 137 checks, including an automated full run of each of the five acts
Where it is going
The course is a curve, not a landscape. One function takes a distance and returns the forward, up and right vectors there, and the road, the rails, the grass and the camera all sit on top of it. A loop is that up vector rotated once; a wall run is it laid on its side. Nothing in the code knows it is upside down.
That made adding acts a matter of extending the curve. What it needs now is somebody running it for real: autoplay finishing all five acts proves the course is unbroken, not that it is fun.
The suite runs without opening a window and stands at 137 checks as of 8 September 2026, none failing. It covers acceleration and momentum, boost, jumps, the lock-on air dash, a fully inverted frame inside a loop, wall runs, gap jumps, the collapsing bridge and every checkpoint, and it drives each of the five acts to the finish. It was fooled badly once: after the acts were stacked vertically, acts three to five sat below a fixed water plane and the character was running underwater — and every check still passed, because they asked whether the run finished, never what was on screen. The water and the background now follow each act's own base height.
Written while building it
Status
Prototype
- StartedSeptember 2026
- Last worked on2026.09.09
Before you play
- Keyboard or gamepad on a desktop, touch controls on a phone
- Pick an act with A/D on the title screen, then press Enter
- About 13 MB on first load, fetched while you read the cover, so pressing start runs straight away
Links
Tried it?
Tell me what worked, what did not, or what broke. Feedback is read before it is published. The feedback page is in Korean.