Americans can't switch from pounds to kilograms overnight. That would cause mass confusion.
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Press and hold the button for a long as you can endure. You might even get on the leaderboard!
Don't hit the walls, or you'll sink!
The longer you wait to reset the sign to zero, the higher your score. But don't wait too long, or someone else might reset it!
Every 108 minutes, the button must be pushed.
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