4096 River

Score 0

Best 0

Highest tile 327 doublings to 4096

Tap a spot to float it in Next 2

4096

You built 4096

Score 0 · 0 moves

New numbers 2 – 32

How to play 4096 River

The river has four lanes of three spots, and lanes next to each other flow opposite ways: the first and third lanes to the right, the second and fourth to the left, wrapping round at the ends. Each turn you may hop one number first: tap a number that sits right above or below its twin in the next lane, or swipe it up or down, and it hops onto the twin and the two merge into their double. Only two equal numbers ever merge, and only one hop is allowed each turn. Then tap an empty spot to float the next number in, and every lane flows one spot along. Place each number where its twin will drift past, because a hop only reaches the lane next door. When the river is full and no twins line up, tap it to let it flow one spot, with no new number, until a pair does. The game ends only when the river is full and no lanes next to each other hold a pair of twins. Build a 4096 to win.

When your best tile reaches 1024, the 2s retire and new numbers start at 4. Each doubling after that retires the next number, and a new number is never more than half your best tile. A small notch on a number shows that its twin sits right above or below it. If both twins match, tap the one you want it to hop onto. With a keyboard: arrow keys move, Space or Enter hops the number under the cursor or floats the next number in; when it could hop both ways, pick with ↑ or ↓. U undoes a move, 3 per game. Your game, best score and record for the fewest moves to 4096 stay in this browser.

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