Telegraphing is about timing

The common mistake is treating telegraphing as visibility. A hazard that is clearly drawn and appears half a second before it reaches you is not telegraphed, because the player cannot perceive it, decide, and act in that window.

The requirement is that the information arrives before the decision. That means the tell has to lead the hazard by at least reaction time plus movement time, which is typically well over half a second and sometimes much more.

A useful budget: about a fifth of a second to perceive, a fifth to decide, and however long the required movement takes. A lane change that takes a third of a second needs a tell leading by at least three quarters of a second.

The tells we use

Each hazard type on this site has a specific tell, chosen to fit the hazard's nature.

HazardTellLead time
Charging creatureA drawn sight line before the chargeAs long as the player takes to cross it
Stamping machineA cycle phase indicator above itContinuous - the phase is always visible
Conveyor beltSpeed and direction printed on the beltContinuous
Slick patchPale blue sheen on the groundArrives with the scroll, never before a hazard
Crumbling platformDistinct texture, then a flashing countdownBefore landing, and during
Thrust trajectoryA dotted ghost predicting one secondOne full second
Gravity wellA drawn outer ring marking the capture boundaryContinuous

Notice how many are continuous rather than momentary. A permanently visible phase indicator is a stronger tell than a flash, because the player can consult it whenever they choose rather than having to catch it.

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Make the tell distinct from everything else

A tell only works if it cannot be confused with something benign. This is why our hazard palette is deliberately separate from the candy palette: bitter greens, greys and machine colours for hazards, saturated candy colours for everything else.

The bitter drop is the clearest case. It is spiky where candy is round, matte where candy is glossy, and desaturated where candy is saturated. Three independent differences, which means it remains identifiable in greyscale, at small size, and at speed.

The counter-example we deliberately built is the sour lemon in Candy Catcher, which resembles a cupcake at a distance and differs only in outline - fluted versus jagged. That is the game's hardest read and the page says so, which is the difference between a designed challenge and an accident.

Enforce spacing so tells stay readable

A tell that appears while the player is already dealing with something else has not communicated anything. Fair hazard design therefore requires spacing rules, not just individual tells.

  • Ice Cream Dash never places a slick patch within one obstacle-length of the next hazard, so the slide always has somewhere safe to happen.
  • Candy Factory phase-locks every machine to a floor master clock, so overlapping windows are deliberate rather than accidental.
  • Our lane generators guarantee a clear lane, so a tell always has a valid response available.
  • Candy Tunnel spaces wall pockets away from formations, so a pocket run is never immediately punished by geometry.

Telegraph the consequence, not just the presence

Knowing a hazard exists is less useful than knowing what it will do. The strongest tells communicate the hazard's future state.

A stamping machine's phase indicator says not only that a stamp exists but where it is in its cycle, which is the information that determines whether to cross. A charging creature's sight line says which direction the charge will take. A gravity well's outer ring says where capture begins, which is what turns it from a hazard into a slingshot opportunity.

The test: does the tell answer the question the player is actually asking? Usually the question is not "is this dangerous" but "when is it safe".

When you can telegraph less

Reducing information is a legitimate difficulty dial, and it has a limit. Candy Tunnel shrinks your glow radius with depth, which is a deliberate perceptual constraint.

It stays fair because two things remain true: the tunnel still contains enough visible space to react within, and a Glow Crystal power-up exists that restores the radius for fifteen seconds. The player has both a reduced-but-sufficient signal and a lever to improve it.

The line is whether a correctly-played situation can still kill you. If reduced information means good play is no longer sufficient, the reduction has gone too far.

Common mistakes

  • Treating visibility as telegraphingA clearly drawn hazard arriving half a second before impact has not been telegraphed.
  • Momentary tells where continuous ones are possibleA permanently visible phase indicator is stronger than a flash, because it can be consulted at will.
  • Tells that resemble something benignA tell must be distinct in more than one dimension: shape, finish and palette, not just hue.
  • Telegraphing presence rather than consequenceThe player's question is usually 'when is it safe', not 'is this dangerous'.
  • Tells with no valid response availableSpacing rules matter as much as individual tells. A warning with no safe option is not a warning.

Practical tips

  • Ask what appeared before the thing that killed you; there is almost always a tell.
  • Look for continuous indicators - phase meters, belt speeds, drawn rings - which can be consulted rather than caught.
  • Hazards on this site never use candy colours, so palette family is a reliable first filter.
  • In Candy Catcher, check the outline: cupcakes are fluted and sour lemons are jagged.
  • Take Glow Crystals in Candy Tunnel; reduced information is the real difficulty there.

Key takeaways

  • Telegraphing is a timing requirement: the tell must lead by reaction plus movement time.
  • Continuous tells are stronger than momentary ones.
  • A tell must differ from benign objects in several dimensions, not just colour.
  • The best tells communicate the hazard's future state, not just its presence.
  • Spacing rules are part of telegraphing - a warning needs a valid response available.
  • Reducing information is fair only while good play remains sufficient.

Frequently Asked Questions

What does telegraphing mean in game design?

Giving the player the information they need before the decision they have to make. It is a timing requirement rather than simply making a hazard visible.

How much warning does a hazard need?

At least perception time plus decision time plus the time the required movement takes - typically well over half a second, and more for slow movements.

Why are continuous tells better than flashes?

Because the player can consult them whenever they choose, rather than needing to catch a momentary signal while attending to something else.

Is reducing visibility ever fair?

Yes, while good play remains sufficient. Candy Tunnel reduces your glow radius and provides a power-up that restores it, which keeps the constraint answerable.

What makes a tell readable?

Distinctness in several dimensions at once. Our bitter drops differ from candy in shape, finish and palette, so they remain identifiable in greyscale and at speed.