Puzzles on the skin of a tesseract
Inside the cellsA tesseract’s surface is eight cubes. These lines run through the cubes, not over its flat faces.
It goes beside your stars on the ranks, where other players can see it. Keep it friendly: names that are offensive or pretend to be someone else are removed.
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This is a free demo with the first 10 levels. The full 4D Arrow, with every level, Challenge, ships and the ranks, is on Google Play.
Get it on Google PlayPlayed in a browser, this needs an account — it is the only place your progress can live. In the app it is optional.
Nothing is shared, and nothing is posted anywhere. The account exists so a cleared browser does not cost you the game.
Additional games in the cluster's numerical system.
What your lines are flown as. Every one handles the same — a ship is what it looks like and nothing more, so buying one never makes a level easier or harder.
Your progress lives on this device. Sign in and it is also saved to your account after every level, so it comes back on any phone you sign in on.
How would you like to pay for a hint?
The board is the skin of a tesseract — 24 square surfaces instead of a cube's six. Every arrow is a line lying on that skin, with a head at its front.
A tap on a blocked line uses up a miss. Misses shows how many you have left, and the level ends when you run out. Early levels allow plenty; later ones only a few.
Stars lie on the board in front of the lines. Send a line through one and it is swept up — but the total in the corner only moves when you win the level, so run out of moves and everything you gathered goes with it, while every blocker you ran into still costs. Stars are the only pay: replaying a level pays only for stars beyond your best there.
Each level you clear is rated with up to three diamonds: one for sweeping up any star, two for at least half of them, and three for every star with no blocked taps. The best rating you have earned on a level is the one it keeps, shown on the map and in Challenge.
A line's body can curve around an edge onto a neighbouring square and keep going, so it may wander anywhere on the skin. Three squares meet at every edge of a tesseract — not two as on a cube — so at each edge a path has two ways on and may take either.
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Opens every level, so any band can be reached without playing up to it.