A brain training app designed for adults to sharpen their minds with a variety of riddles. It offers 100 questions ranging from easy to challenging, perfect for passing the time and stimulating your intellect.
大人のなぞなぞ 2~暇つぶし脳トレIQアプリ~ by Ikue Konno



10+ similar games compared and reviewed
Whether you want more options like 瞬間記憶 or a completely different take on the same concept, our curated list of 10+ similar apps and games has you covered. Updated for 2026 with the latest ratings and comparisons.



A brain training app designed for adults to sharpen their minds with a variety of riddles. It offers 100 questions ranging from easy to challenging, perfect for passing the time and stimulating your intellect.


This brain-training app offers 100 riddles designed to encourage flexible thinking. It features a wide range of difficulty levels, from easy to challenging, making it enjoyable for all ages. Perfect for those who enjoy puzzles, IQ tests, and cryptograms as a way to pass the time.



Test your memory by recalling the exact position and order of pixels. Challenge yourself with increasingly difficult levels or practice at your own pace in free mode. Master the grid to succeed.


This game challenges your memory and concentration by requiring you to memorize and recall the colors and positions of bubbles. Designed to improve cognitive skills and creativity, it offers increasing difficulty across 28 stages.






This app offers a series of brain-training puzzles designed to refresh your mind. Solve over 500 riddles and logic problems across multiple stages, using hints and keywords to progress. It's a fun way to challenge your cognitive skills and keep your brain agile.






Engage in a simple yet stimulating calculation puzzle game designed to assess and improve your brain's condition. Solve four-choice math problems by tapping the correct answer to activate your mind. Perfect for a quick mental workout.