Engine · v4.0.0

Optical Illusions

Six classic optical illusions that play with the music: wheels that seem to turn, stairs that never end, an endless spiral, a spiral that is really circles, sweeping moiré waves and a phantom chaser. Kept within broadcast flash and pattern limits.

Open in Classic Open in Studio

All engines

6 modes

Launch modes

Rotating Snakes

Wheels that seem to turn while they stand still. The illusion fades in as the track builds; the centre wheel steps round on every kick and the four around it take turns on the beat.

Classic Studio

Endless Stairs

A glowing climber takes one step a beat up a staircase that loops back on itself forever, lighting each tread it lands on; every tread glows with its own band and the drop sends a second climber round.

Classic Studio

Hypnotic Spiral

An endless spiral flowing in toward your cover art. It surges inward on every beat and pours faster as the song builds, and each new section changes how many arms it has.

Classic Studio

Fraser Spiral

Twisted cords that read as one spiral. A ring ticks round and lights on every beat; when the song gets loud they untwist to show they were circles all along, and the twist comes back when it calms.

Classic Studio

Moiré Waves

Two fine ring patterns, one slightly off centre: as it circles, surging on every beat, broad waves of interference sweep the frame around your cover art, always the same way round.

Classic Studio

Phantom Chaser

Twelve soft discs round a cross, one missing at a time on the beat grid. Watch the centre and a phantom disc in the opposite colour runs round while the others fade.

Classic Studio

37 controls

Controls

Control	Group	Type	Default	Animation	Audio
Primary colorPrimary color used by the engine palette	Style	color	#facc15	Yes	No
Secondary colorSecondary color used by the engine palette	Style	color	#2563eb	Yes	No
BackgroundBackground used by the engine palette	Style	color	#0b0b12	Yes	No
OpacityVisualizer opacity	Transform	range	1	Yes	No
SensitivityBounded overall audio response	Audio	range	1	Yes	No
Spectrum rangeHow much of the 40 Hz to 14 kHz range the visual spans, from the bass up. Lower it to give the bass and mids more of the bars	Audio	range	1	Yes	No
Frequency scaleHow the bars are spread across the frequencies. Log spreads them by octave, mel by how pitch is heard, and linear by hertz, which gives most bars to the highs	Audio	select	log	No	No
Auto-levelLifts every part of the spectrum to its own recent range, so quiet highs move as much as loud bass. A note held for several seconds settles lower as it adapts. 0 shows the raw spectrum	Audio	range	0.8	Yes	No
Primary audio sourcePrimary audio source	Audio	select	bass	No	No
Frequency focusWhich part of the spectrum drives this visual; while no explicit audio source is set, the motion envelope follows this selection	Audio	select	full	No	No
Burst intensityGlow and trail swell on sharp hits; 0 keeps bursts off	Audio	range	0	Yes	No
Ambient bedProminence of the standing background layer behind the beat-born elements	Effects	range	1	Yes	No
Wake lengthHow far motion trails stretch behind beat-born travelers; 0 removes the wake	Effects	range	1	Yes	No
Audio contributionMaximum contribution from the primary audio route	Audio	range	0.55	Yes	No
Audio dynamicsHow much of the band's movement reaches the visual. 1 = full dynamics; 0 holds it at a steady level for a calmer, more constant look	Audio	range	1	Yes	No
Audio attackEnvelope attack in milliseconds	Audio	range	45	Yes	No
Audio releaseEnvelope release in milliseconds	Audio	range	240	Yes	No
Geometry scaleGeometry scale	Geometry	range	1	Yes	Yes
SpeedTime-based motion; default major cycle is 6–12 seconds	Motion	range	0.1	Yes	Yes
Color modeDuo palette, primary→secondary gradient, or full rainbow sweep	Style	select	duo	No	No
GlowGlow	Effects	range	0.55	Yes	Yes
Global glowShared emissive strength across the frame	Effects	range	0.35	Yes	Yes
Pulse intensityBeat pulse scale for spawn, size, and shake	Effects	range	1	Yes	Yes
Beat responseHow hard every engine hits on each detected beat	Audio	range	1.2	Yes	Yes
Beat smoothingHow long each beat hit rings out before it settles	Audio	range	0.35	Yes	Yes
Beat attackSeconds for a hit to swell to full. 0 snaps instantly	Audio	range	0	Yes	Yes
Beat releaseSeconds for a hit to fade, overriding Beat smoothing. 0 follows it	Audio	range	0	Yes	Yes
Beat shakeFrame kick strength on each beat	Effects	range	0.6	Yes	Yes
Motion echoMotion echo	Effects	range	0	Yes	Yes
BlurBlur	Effects	range	0	Yes	Yes
Chromatic aberrationChromatic aberration	Effects	range	0	Yes	Yes
Beat sync allRoute beat energy into spawn, shake, pulse, speed, and scale	Audio	boolean	true	No	No
Illusion strengthHow strong the effect is: the snakes' drift, the Fraser twist, the moiré offset and the chaser's softness	Illusion	range	0.85	Yes	No
Pattern scaleSize and density of the pattern	Illusion	range	1	Yes	No
ContrastLower it for a calmer, softer pattern. Patterns always stay within broadcast safety limits	Comfort	range	1	Yes	No
MotesSlow motes in front of the illusion that the highs light up	Illusion	range	0.5	Yes	Yes
Chaser stepsHow often the gap moves: on every beat, every eighth or sixteenth note, or faster in the loud sections (auto)	Illusion	select	auto	No	No