An ingenious brain teaser game that will improve your IQ. Learn to play it in under 10 seconds! As you progress through the game, your rank will improve along with the difficulty, so your brain will only get better and faster! FEATURES: - Super easy to learn! - Simple, Fun and Addictive. - 10 Ranks to Level Up. - Relaxing sound track. - Leaderboards. - Endless replay value. - An exercise for your brain! Down to zero is a brain teaser game where you'll only get smart