Where numbers and symbols come raining down as balls and slowly build a stack.
Use the balls to remove them all if you correctly compute the question that remains.
Progress through the levels and become the greatest warlord of Number Rain.
The Math Gods from above have cursed the world with incessant Number Rain. Challenge the Gods in their game and get ridiculously awesome with mental calculations in the process.
Get addicted to the most fun way of getting really good with numbers. Make your kids fall in love with calculations or advance to the more difficult levels to improve your prowess at performing quick mental calculations. With unlimited levels of ever increasing difficulty you could get hooked for a lifetime.