Brain Reactor

Brain Reactor

Brain games for 1–4 players

20 ratings
35 reviews
Free
In-App Purchases

Details

Released
August 17, 2010
Updated
October 20, 2026

Features

Brain Reactor screenshot #1 for iPhone
Brain Reactor screenshot #2 for iPhone
Brain Reactor screenshot #3 for iPhone
Brain Reactor screenshot #4 for iPhone
Brain Reactor screenshot #5 for iPhone
iphone
ipad
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About

A multiplayer party game for 1-4 players on a single device. Test your reflexes and quick thinking with a variety of mini-games. Perfect for gatherings, it offers local play with no internet connection required.

✓1-4 player local multiplayer
✓Variety of quick mini-games
✓Single device gameplay
✓Customizable match settings
✓Light/Dark/Auto appearance modes
✓Responsive layouts for different devices
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What's New in Brain Reactor

3.0

October 20, 2026

Brain Reactor is back with a fresh party-game design! • Updated for iPhone Duo with layouts that adapt to its larger display and pause gameplay when the screen size changes. • Play together with 2, 3 or 4 players, or challenge AI on Easy, Medium or Hard. • 20 brain mini-games: 10 included and 10 available with Full Game. • Build a match with random or chosen games, or jump into a single game. • Larger instructions facing both sides, plus a Get Ready countdown. • Light, Dark and Auto themes. • Sound effects, haptic feedback and clearer answer reveals. • Moving-ball penalties, faster cup shuffles and more varied challenges. • One-time Full Game unlock with Restore purchases. • Share the game and contact support from Settings.

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Subscriptions & In-App Purchases

$2.99

Brain Reactor Full Game

All 20 games. No ads. One-time purchase.

User reviews

UPDATE 64Bit PEASE!!

Bitte dringend auf 64 Bit updaten!!!!

Update to ios11 please

Great game to play with friends. Update it please :/

Update please

Like

Game selection settings not working

I used to love this game but now there's a problem selecting games.

A good game for relaxing

It's indeed a good game, very interesting. We can choose to play with robot, or 1-3 friends. Obviously if you want to play with your friends, you'd better play it on Ipad. The screen of iphone is not large enough. Acturally, the form and content of every little game are very interesting, player need to focus on the screen and run their minds very quickly. But their are still some drawback: first, certain turtoral is necessary for people who play it for first time, and the turtoral should can be skiped. secondly, Can you make the picture more lovely and attractive? It seems all the popular games have a common points: have wonderful picture. Third, Can you provide more language for our choice? I will appreciate if very much if you can provide Chinese interface for me.
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Developer apps

FAQ

What is Brain Reactor?

Brain Reactor is a multiplayer party game designed for 1-4 players to compete on a single iPhone or iPad. It features a collection of quick mini-games that test reaction time, logic, and quick thinking.

How many games are included in Brain Reactor?

The base version of Brain Reactor includes ten games. An optional 'Brain Reactor Full Game' purchase unlocks an additional ten games for a total of twenty.

Does Brain Reactor require an internet connection?

No, Brain Reactor is designed for local play on the same device. It does not require an app account or an online opponent, making it perfect for playing anywhere.

What is the age rating for Brain Reactor?

Brain Reactor has an age rating of 12+, indicating it is suitable for players aged 12 and older.

How does the full game purchase work?

The 'Brain Reactor Full Game' is a one-time purchase that permanently unlocks the additional ten games and removes ads that appear between matches in the free version. It is not a subscription.

Can I play Brain Reactor on different devices?

Yes, Brain Reactor supports responsive layouts that adapt to iPhone, iPhone Duo, and iPad devices. You can also choose between Light, Dark, or Auto appearance modes.

What kind of mini-games are in Brain Reactor?

The games involve various skills such as spotting differences (like a bitten apple), solving simple equations, judging overlapping shapes, timing taps, memory grids, dice totals, rock paper scissors, and more.

How is Brain Reactor rated by users?

Brain Reactor has a high user rating of 4.7 stars based on 20 ratings, suggesting a positive user experience and satisfaction with the gameplay.