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Tap the glass to flip it when it's done.

Settings

How many grains are in the glass. More grains means finer sand.600
How fast the grains pour through the neck and fall. Low flow lags behind the percentage and catches up.50

How long the demo task takes from start to done.8s
Pace

Bursty stalls and jumps like a real upload.

LoopFlips the glass on its own a moment after each run.