Which Cup Fills First?

4.4

Read the pipes. Trust the physics.

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About this game

A tangle of pipes feeds several cups — but some are blocked, some leak, and the cups are different sizes. Study the network, tap the cup you think fills first, then open the valve and watch a real water simulation prove you right or wrong. 18 hand-tuned puzzles with traps, leaks and capacity tricks.

How to play

  • Tap/click a cup to predict
  • Tap RUN (or Enter) to start the water
  • Reset (R)
  • Hint (H)
  • Mute (M)

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