NagareZan - Math Puzzle Game

Catch the moving numbers! A 60-second mental math challenge — clear 5 problems and train your brain anytime, for kids and adults alike!

Numbers are floating around the screen. Can you catch the right ones in time?

Simple to Play

The bottom half of the screen is filled with bouncing number balls. A math equation appears on the blackboard at the top (e.g., □ + □ = 11). Drag the correct number balls into the empty slots to complete the equation.

When all slots are filled, the answer is checked automatically. Get it right, and the next question appears. Clear 5 questions to win the round!

5 Difficulty Levels — Just Like Leveling Up in Math Class

Easy (Grade 1–2) Addition only. Single-digit answers to ease you in.

Normal (Grade 3) Addition, subtraction, and multiplication. Two-operator equations appear.

Hard (Grade 4) Two-operator equations become common. Balls move faster.

Oni (Fierce) (Grade 5) Fractions! Add, subtract, and multiply fractions with the same denominator.

Kami (Master) (Grade 5–6) Mixed denominators. You must work out the LCM in your head to answer. The ultimate challenge.

Earn Coins. Unlock Levels. Keep Improving.

You earn coins every time you clear a round. Spend them to unlock the next difficulty level. You can also buy in-game items to help you through tough rounds:

• Time Extend: Adds 10 seconds to the clock
• Ball Stop: Freezes the balls so you can think
• Hint: Auto-fills the answer slot for one question
• Skip: Swaps the current question for a new one

Beat your best clear time. Clear without items for a bonus coin reward.

Ads That Don't Get in the Way

No banner ads. No forced video interruptions.

• After clearing a round, you can choose to watch a short video to double your coin reward.
• If time runs out, you can watch a video to continue with +30 seconds.

That's it. Ads are completely optional.

Who Is This For?

• Kids who want to get better at math
• Adults who want to sharpen their mental arithmetic
• Anyone who wants a quick brain workout on the go
• Puzzle fans looking for something fresh beyond sudoku
• Players who want to feel the satisfaction of beating their own best time

Requirements

• iOS 15 or later
• Playable offline (internet required only for ad videos)
• Free to download

Sound Effects Credit

Sound effects in this app are sourced from:

• Soundeffect-Lab (https://soundeffect-lab.info/)
• DOVA-SYNDROME (https://dova-s.jp/) — "Coin Get" by Hifumi Theory
• Pixabay (https://pixabay.com/)

Privacy Policy: https://obaryosuke.github.io/nagarezan-privacy/ Developer: obaryosuke (Ryosuke Oba) Contact: obaryosuke1021@gmail.com