-This game is a game where you quickly find and press the number "1".
・This is a game that can be played in just 10 seconds to train instantaneous visual recognition (brain training).
・Recommended for a coffee break during free time, while traveling by train or bus.
- Regular updates reflect user feedback.
・It's a game where you press 1, so it's titled ``Recommended''.
・Compete for the time to clear all 11 stages.
- If you press anything other than "1", it will be an incorrect answer and the game will be over.
-The time limit for each stage is 5 seconds. Even if you exceed the time limit, the game will be over.
・You can play 20 times when you first start up.
- Viewing a reward ad will give you 20 new play rights.
・If the date changes from the last time you started the app, you will receive 20 play counts.
・Rankings are the same worldwide. We use the leaderboard feature of Google Play Games.
- When you start the app, you will be asked to log in to Google Play Games. If you do not log in, you will not be able to participate in the world ranking. Also, you cannot participate in the rankings unless you select "Public" in the privacy settings for the games you play.
・If it is discovered that someone has participated in the ranking by illegal means, the entire ranking will be deleted.
・From version 1.5.5, we have implemented an extremely difficult mode called hell mode.
・The clear rate of hell mode is 5%
- From version 1.5.6, we have implemented rankings exclusively for hell mode.