Sinus Creek

Not medical advice.

Maps

How to play

The water

The creek runs at you from the top of the screen. Every wall of whitewater is one heartbeat, and there is a gap in it. Slip through.

The paddle

Tap the water where you want to go and the canoe paddles there. Drag, and it follows your thumb. Let go, and it holds its line. The grips in the bottom corners paddle one side each: hold one for a long stroke, tap it for one stroke. Tap a fork's sign to steer into that mouth.

Hulls and metres

Top right, three hulls. A rock empties one, and three empty is a capsize. A run of clean crests mends one, and the hull says mending while it fills. Top left, the farthest the pulse has carried you this run, then the crests you cleared, then the forks you read right.

The tongue

Every gap is fed by a tongue of glassy water. Hold your line in the glass all the way to the drop, and the drop pays you double. The tongue is the PR: a long, deep, streaked chute before every drop is first degree block, the same length every time.

Both blades

Two thumbs down at once is a brace. In ordinary water it holds you straight. In an arrest it charges a shock, and letting go delivers it.

The fork

At the end of a stretch the creek splits into channels, and each channel has a rhythm name on its sign. Steer into the channel named for the rhythm you just ran. There are two signs at first, and three once you have met that rhythm's look-alikes. The wrong channel costs a hull, the same as a rock. A wrong name on its own never sinks the boat. Reach the far bank for the first star; read at least half its forks on the way, more where a fork has only two mouths, and the next pool opens.

The monitor

A band runs across the top of the water: the same beats, drawn the way a nurse reads them. The green number is the rate on the paper. The amber one is the rate that is actually moving the boat, and the two do not always agree.

The arrest

Some water cannot be paddled. The current dies, or the channel comes apart, and the answer is your hands: alternating strokes are compressions, a held thumb charges, letting go delivers the shock. Every seven seconds the creek calls a rhythm check. Hands off the chest, and tap the mouth that says what this rhythm needs.

Keys

Left and right arrows, or A and D, paddle each side: hold for a long stroke, tap for one. Both at once is a brace. Escape pauses. Everything here is playable without a touchscreen.

A teaching game. Not a monitor, not medical advice, and nothing in it is a dose. Not affiliated with, endorsed or approved by the American Heart Association.

The rest of the river

Report a snag

Something wrong with the water? Say what happened and what you were doing when it did. It goes straight to the person who can fix it.

No name, no email, nothing that identifies you. Sent with it: the screen you were on, which water you were running, and your screen size.

Settings

Your record

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Rhythms

What it is

How you read it

Where you met it

Held in the eddy

Sinus Creek

You capsized

    Water you just paddled