Brain-teasing game roundup
Simple games are fun, but sometimes you want something that really makes you think! For you, we’re introducing recommended brain-training game apps.
We’ve gathered a wide range of classics like board games, card games, puzzles, and popular remixed games.
These apps include not only trending titles but also games perfect for filling short breaks.
As we get older, thinking things through can start to feel like a chore.
But with brain games, you can train your mind while having fun!
- Games you can play with just conversation. Classic and popular activities you can enjoy without any props!
- Single-player games: a roundup of time-killing games
- Challenge together! A roundup of word games for adults
- Perfect for killing time! Games you can play with two people.
- Perfect for killing time! A roundup of games for three people to enjoy
- [For 2 Players] Easy Pen-and-Paper Time-Killing Game
- Games you can play in the car! Fun activities to liven up drives and traffic jams
- Kill time while waiting or stuck in traffic! A roundup of games four people can play
- A simple and fun co-op game that enhances teamwork
- [Simple Games] Recommended Indoor Recreational Activities for Adults
- Games and activities everyone can enjoy together. A collection of fun play ideas.
- [Get Friendly with Games] Math Games, Apps, and Activities
- Indoor games and recreational activities recommended for junior high school students
Brain Training App (1–10)
Polysphere

Polysphere is a popular game that once ranked second among free mobile app games.
To put it simply, it’s like a puzzle, but with pieces arranged on a 3D shape.
Rotate it 360 degrees to find the angle where the pieces align.
When they line up correctly, animals or plants will appear.
If it’s difficult, there’s a help feature you can use, so give it a try.
Round Your Square Head: IQ Edition

The app game “Rounding Off a Square Head: IQ Edition” presents a series of puzzles that can’t be solved with a square head, and you answer them in order.
It might resemble a word association game in some ways.
You imagine and deduce what the visible clues represent, so the sense of clarity when you solve one is a distinctive part of the experience.
It’s also funny that if you get it wrong, the game taunts you with, “Kacchi kacchi ya de” (meaning you’re stiff-headed).
Brain Training App (11–20)
Zipang Casino

This is Zipang Casino, an online casino you can play on your smartphone.
You might wonder, “A casino for brain training?” but it actually gives your brain a good workout! While luck plays a part, it’s surprisingly stimulating—enjoy the cycle of predicting and taking on challenges.
You can even earn real money in the app, so once you start playing, it’s hard to stop.
It offers plenty of thrills, making it a great choice for adults!
In conclusion
Everyone, did you get a good mental workout? Of course, strategy games challenge your brain, but even simple games can really make you think with just a bit of a twist.
Many board games also have app versions, so if any caught your interest, be sure to check them out.
Besides the brain-training apps I introduced, there are plenty of other fun apps as well.



