Umbra
Tap the exact moment the hidden marble reaches the exit.👆
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Play to set a score, then submit it to the board.
About Umbra
Umbra is built around a small act of faith: a marble rolls out of the light, disappears into a dark tunnel, and never reappears until it has already passed the point you were supposed to hit. You get one look — the lit stretch at the entrance — and from that you read its speed, because every marble holds that speed to the end. The arrival time is fully determined the instant it goes dark, so this is extrapolation, not reaction; there is no last-second glimpse coming to rescue a guess. Tap the lane at the exact moment it should reach the far marker, or hit 1, 2, 3 for the three lanes, and a perfect read scores most while a tap outside the window costs a life. Faster marbles are worth more, so speed rewards the read instead of punishing it, and as you climb the lit entrance narrows to a sliver — the timing window never changes, only how much you are given to work from. Free, instant, and quietly nerve-wracking.
How to play
- A marble starts at the left edge and rolls at a constant speed toward a dark tunnel.
- You can see it only before it enters the dark. After that it is gone until it exits.
- Tap its lane the instant it reaches the marker on the far right. Keys 1, 2, 3 hit lanes 1 to 3.
- Perfect taps score most, close ones score less, and a tap outside the window costs a life.
Strategy & tips
- Watch the marble in the lit stretch and read its speed there. Every marble holds that speed to the end, so the arrival time is fully determined the moment it enters the dark.
- Count in your head rather than guessing. The marble never reappears, so a last-second glance is not coming to save you.
- Faster marbles are worth more points, so they reward the read rather than punish it.
- Perfect taps build a combo, and multiple marbles in flight multiply the whole thing. Chase both once you can hold a rhythm.
- As you level up, the lit entrance shrinks from wide to a sliver. The read gets harder, not the timing window.
FAQ
Does the marble ever reappear?
No. Once it enters the dark it stays hidden through the exit and beyond. That is the whole game — you are timing something you cannot see.
Is this reaction speed?
No. It is extrapolation. You read the speed early and predict the arrival, so there is nothing to react to at the moment you tap.
Can I just spam taps?
No. A tap outside the window on a lane holding a marble costs a life, so spamming is self-defeating.