Skyways · a Waterways course, v2 · divided attention
one valve, two thirsty clouds · keep switching, or one dries out · all signals simulated
Focus signal (simulated) · your calm line
settling in
Puzzle
1
Cloud A
Cloud B
Both held
0.0s / 10s
Balance
–
Calm time
0%
Designer / test controls
The focus value is a simulation of an EEG-derived estimate. It shapes light and sound only and never changes the puzzle. Keyboard: arrow keys move, Space or Enter turns/toggles.
Skyways
One spring feeds one valve, and the valve feeds two clouds — but only one branch at a time. Tap the valve to switch which cloud is currently getting water; the other side slowly dries out while you're away. Both clouds need to stay reasonably full at the same time for a little while to finish the sky — which only happens if you keep circling back, not by picking one and forgetting the other. The drain is slow and forgiving on purpose; there's no reflex test here, just remembering to come back.
First we take a short calm baseline, then your steadiness sets a personal line. Staying above it brightens the sky and quickens the rain. The focus signal is simulated here for testing; in the product it comes from an EEG headband and never touches the puzzle itself.
What's new for L4 (divided attention), shared-valve version: a single source feeds a valve tile that can only route to one of two branches at a time — tap it and flow immediately redirects, no ambiguity about how many taps that takes. Each cloud fills while its branch is active and drains (more slowly) while it isn't, shown as a plain, always-visible bar — no hidden meters. The puzzle is solved after holding both clouds above 55% at the same time for a combined 10 seconds, which is only reachable by actually switching back and forth. The two branches get a cosmetic warm/cool tint purely so they're easy to track visually; there's no color-matching rule this time, on purpose, to keep the construct clean. Correction isn't tracked here since this isn't really a routing-efficiency task; balance (how evenly your time split between the two branches) replaces it as the more meaningful signal. Calm time, the focus signal as a secondary layer, calm baseline, and keyboard play all carry over unchanged.