Question 1

What is Nuance?

Accepted Answer

A low-contrast perception streak game. The screen shows a single flat colour; a digit or letter slowly emerges in a sibling shade of the same hue and you have to tap it the moment you see it. Like a moving Ishihara plate · the longer you wait, the more obvious the glyph gets, but a wrong tap (or a timeout) ends the streak.

Question 2

How is the difficulty defined?

Accepted Answer

Difficulty controls the peak lightness gap between the glyph and the background at the end of the fade-in ramp. Easy ends at about 32% lightness difference (clearly visible by the last second), medium at 16%, hard at around 4% (almost invisible even at peak). Harder difficulties also use a longer ramp · so you have more time to spot a subtler signal.

Question 3

Where does the glyph appear?

Accepted Answer

A random spot in the canvas, kept at least one glyph-radius away from every edge so the hitbox is never clipped. Position is part of the seeded data, so the same round seed always lands the glyph in the same place.

Question 4

How do I tap it?

Accepted Answer

Tap or click anywhere on the canvas. If your tap is within the glyph hit radius (a touch larger than the glyph itself), the round wins · the verdict shows how fast you spotted it. If you tap the wrong spot, the round ends and a marker shows where the glyph actually was.

Question 5

What happens when the round times out?

Accepted Answer

A timeout counts as a fail · the glyph snaps to full contrast, a marker shows where it was, and the streak ends. The timeout is the fade-in length plus a short thinking buffer, so even on hard difficulty you get a few seconds at peak contrast before the round closes.

Question 6

Is the canvas the same for everyone?

Accepted Answer

Yes. Nuance is fully deterministic from the seed · the labyrinth, the standalone page, and a shared deep-link all render the same round when handed the same seed. No images ship with the game; the canvas is generated live from a handful of HSL numbers.

Question 7

Is colour vision required?

Accepted Answer

No · the only cue is lightness, not hue. Players with red-green or blue-yellow colour-vision differences can play without disadvantage. The game is intentionally a pure-luminance test (the same channel Ishihara plates use), so the answer never depends on telling two hues apart.

Question 8

Can I play offline?

Accepted Answer

Yes. PlayMemorize is a Progressive Web App and Nuance is part of the offline pre-cache. Once loaded, every round generates locally · no network needed.