Sometimes you receive a power-up with a timer symbol as a reward for in-game achievements. The symbol means that the power-up is only available for a limited amount of time, and that you should use it as quickly as possible.
Sometimes you receive a power-up with a timer symbol as a reward for in-game achievements. The symbol means that the power-up is only available for a limited amount of time, and that you should use it as quickly as possible.