Lateral Thinking Quiz: Truth Terminal

Director's Sea Turtle Soup | 68 Lateral Thinking Puzzles for Brain Training

Director's Turtle Soup | Brain Training Lateral Thinking Quiz

出題者 vs 回答者

It's a quiz game with game mechanics where you think for 1 minute per question and try to get a set number of correct answers. You can also create problem sets.

Wit Character Quiz | Daily 1 Question · 10 Question Challenge

Get inspired by the appearance of characters! Free riddle character quiz

Difficult-to-Read Place Names Quiz: Conquering Japan

Place Names and Station Names That Look Like They Should Be Readable But Aren't: Conquering All 47 Prefectures

iconside — Icon Association Quiz

A guessing game quiz that everyone can play together

Metro Poker | A Poker Game Without Playing Poker

A service that visualizes your decision-making and judgment tendencies

F@NZA王クイズ

This is a game where you read a sample of a doujinshi (self-published work) and guess the "title" from four options.

Damn Turtle: An Unreasonable Sea Turtle Soup App

Those absurd lateral thinking quizzes you see online—the so-called "trash sea turtle soup" riddles. I've turned them into an app you can play solo.

Easy Cipher Text App with Ads

An app that can turn sentences mixing hiragana, katakana, and alphabetic characters into "playable cipher texts" using five types of ciphers.

nazopedia - 謎解きレビューサイト

ネタバレなしで、次に遊ぶ謎解きが見つかる。

Everyone's Statistics

A statistics site where you can view everyone's answers just by answering questions that interest you.

OneQ - 毎日、たった一問。

毎日、たった一問。 みんなの本音データを、毎日ひとつずつ。 匿名で、かんたんに、リアルな実態を可視化します。

Villainess Character Diagnosis

Answer just 12 questions to get a character diagnosis of your past life and your reincarnated villainess character.

IyaTalk - A calling app that makes you feel unpleasant

How about feeling uncomfortable? A 1-minute smartphone mystery. Try calling an unknown phone number (AI) and feel unsettled.

Flash mental arithmetic

You can do flash mental arithmetic suited to your own skill level!

Create a four-choice multiple-choice quiz from your own problem set that you can memorize

A memorization app that converts what you want to remember into multiple-choice questions and presents them again when you've forgotten

Suspicious Market: Buy or Pass

A second-hand deal looks fine. Check the clues, question the seller, then buy or pass.

Calcule - Math Puzzle Game | heavymoons

Mathematical Formula Reasoning Puzzle Game

Phone Num Guessr | Area Code Guessing Game

Guess somewhere in Japan based only on the area code.

English Word Quiz | Vocabulary Diagnosis with 20 Questions

I've created a free English vocabulary quiz that requires no registration. Answer 20 questions and you'll get an estimate of your vocabulary size and proficiency level. The learning-focused multiple-choice quiz adjusts its difficulty based on your correct and incorrect answers. You can also specify a range tailored to your goals, such as Eiken or TOEIC. Please feel free to try it out first. https://eitanquiz.com/

BuzzQ - English Rapid-Fire Quiz App

Let's have fun learning English through quizzes!

That day, who was there

Tracing memory and testimony, approaching the truth of that day

見た目でズバリ分かる 応答速度チェッカー

Mystery Solving After Payment

Decode Crime from Receipts! A Profiling Mystery Game!