Americans can't switch from pounds to kilograms overnight. That would cause mass confusion.
Press and hold the button for a long as you can endure. You might even get on the leaderboard!
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!
Whatever you do, you must not press the red button.
Because the original Bubble Shooter game is way too hard.