Null Cascade
Tap the falling packets before they breach your firewall — but not the sealed ones.
How to Play Null Cascade
- Tap a falling square to null it before it reaches the firewall line.
- Armoured packets show extra outlines and need more than one tap.
- Circles with a tick are sealed traffic — tapping one costs you. Let them land.
Controls
| Keyboard | Not required |
|---|---|
| Touch | Tap a falling packet to null it |
Tips
- Let a packet fall into the hatched band before you tap it. It pays double, and you still have time if you commit early.
About Null Cascade
Corrupted packets fall toward your firewall. Tap one to null it before it lands. Armoured packets take more than one hit, and sealed traffic must be let through. It runs directly in your browser with no download or sign-up, on desktop and mobile alike.
Design notes: how Null Cascade was built
Sealed packets — the ones you must let through — first appear 7.5 seconds into a run, and that number was chosen against the test harness rather than for the player. An abandoned run ends at roughly six seconds, so an idle player never encounters the do-not-tap rule and never has a chance to fail it by accident. The rule arrives only once somebody is actually playing.
Targeting picks exactly one packet: the nearest inside an elliptical hit test, wider than it is tall. A tap in a lane game is horizontally imprecise and vertically meaningful, so the forgiving axis is the one where imprecision does not change your intent.
Spawn decisions for armoured, sealed and heavy packets use probability accumulators rather than a random roll per frame — each frame adds the current rate to a counter and fires when it crosses one. The sequence is then completely deterministic for a given elapsed time, which makes a run reproducible and makes tuning possible at all. A sealed packet awards score but no integrity, so a passive player cannot accidentally heal their way past the point where the game is supposed to end.
More of these in the dev notes.
Frequently Asked Questions
Which packets should I not tap?
The circles with a tick through them. They are sealed traffic, and nulling one costs firewall integrity.
Why did one packet take two taps?
It was armoured. The concentric outlines show how many layers are left, so you can see it before you commit.
Does letting a packet fall further help?
Yes. Nulling inside the hatched band near the floor pays double, but you get one chance at it.
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