# Brain Out Screw: Nut Bolt Jam — Solve Mystery of Screw & Wood

> Logic puzzle game to unscrew nuts and bolts to drop wooden parts. (iPhone/iPad app by 昕欣 赵.)

- Source: https://appshunter.io/ios/app/brain-out-screw-nut-bolt-jam/id6749202157 (this page in markdown: same URL + `.md`)
- Developer: [昕欣 赵](https://appshunter.io/developer/1828548091)
- Category: Games, Casual, Puzzle
- Price: Free with in-app purchases
- Rating: 4.90/5 from 17 App Store ratings · 14 written reviews indexed
- Age rating: 12+
- Requires: iOS 15.0 · 202 MB
- Languages: American English, French (France), German (Germany), Japanese, Korean, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan)
- Released: 2025-08-12
- Data updated: 2026-08-15
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/brain-out-screw-nut-bolt-jam/id6749202157/reviews.md

## What is Brain Out Screw?

Unscrew unbolt unleash your brain

Welcome to Brain Out Screw: Nut Bolt Jam the test of logic patience and pure puzzle solving joy If you love games that tickle your brain and give you that satisfying aha moment youre in for a real treat

In this game your mission is simple but tricky Unscrew nuts and bolts in the right order to make all the wooden parts drop Sounds easy right But each piece is connected in ways that will truly test your brain power One wrong move and the whole structure could stay stuck

Features:
-Hundreds of handcrafted levels
-Realistic screw and bolt physics
-No time limits or pressure
-Smooth and satisfying visual effects
-Offline play supported

How to Play:
-Tap to select a bolt or nut
-Rotate to unscrew
-Watch how the wooden pieces move
-Plan carefully before each move
-Clear the board by dropping all blocks

There are no stress just you and a clever puzzle to solve It is a relaxing yet brain challenging experience perfect for short breaks or longer sessions Each level is like a little engineering problem waiting to be cracked

Whether you are a casual player or a puzzle master BRAIN OUT SCREW offers something for everyone Logic physics planning and a bit of creativity go a long way With intuitive controls and a clean design it is easy to pick up and hard to put down

Download Brain Out Screw: Nut Bolt Jam, see if you can untangle the toughest bolt puzzles around Your brain deserves a workout.

## Key features

- Hundreds of handcrafted levels
- Realistic screw and bolt physics
- No time limits
- Offline play supported
- Satisfying visual effects
- Intuitive controls

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| No Ads | $9.99 | one-time |
| Power Pack | $12.99 | one-time |
| 150 bonus coins | $0.99 | one-time |
| Starter Pack | $14.99 | one-time |
| 450 bonus coins | $14.99 | one-time |
| 1000 bonus coins | $19.99 | one-time |


## Recent user reviews (10 of 14)

All indexed reviews: https://appshunter.io/ios/app/brain-out-screw-nut-bolt-jam/id6749202157/reviews.md

### 1/5 — 広告が多い

*2026-05-04*

プレイ中にも広告、プレイ後にも広告、プレイ前にも広告、広告だらけ。
単純で同じようなステージがたくさん出てくる。
ほかの似たようなアプリをやったほうが楽しいと思います。

### 1/5 — WARNNIG

*2026-03-30*

どう設定を見直しても広告の読み込みに失敗して通信エラーでまともにプレイ出来ない。
広告読み込み頻度がかなり高いのでエラーが出ないうちに強引に……という方法も使えず詰み。
このメーカーのアプリでだけ発生する症状なので私の環境だけが原因という訳でも無さそう。

### 1/5 — ゲームではない

*2026-03-21*

広告を見るためのアプリ
アプリの挙動が不安定
クソアプリ

### 1/5 — 広告が多すぎ

*2026-03-16*

プレイ中30秒に1回くらいのペースで広告が流れる。
そしてその広告は20秒以上もある。
さすがにストレスです。
ゲーム自体は面白いのに残念。

### 1/5 — ライフの減り方謎すぎ

*2026-01-31*

失敗してないのにライフ減ってくの草
ポイ活で必要な最低限のステージクリアしたら即アンインストール

### 1/5 — むり

*2026-01-29*

しねごみ

### 1/5 — しつこい

*2025-11-10*

しつこい広告屋Unityがまたいたよ
Unity見たらすぐアンスト
いつでも何処でも広告入れてきやがる
うんざり

### 1/5 — 読めない

*2025-11-10*

外国語なので日本語しか分からない自分には何を書いているのか分からず、ゲームを進めることが出来ません。

### 1/5 — 地獄

*2025-10-22*

広告地獄　鬼ストレス

### 1/5 — ストレス

*2025-10-07*

ポイ活で始めましたがあまりにも広告が多すぎます。
・1プレイ中に2~3回、クリアしても広告が流れる。
・クリア後の広告中にアプリを閉じるとハートが減る。
・ハート回復の広告を見ても1つも回復されない。
ふざけてる？

## Frequently asked questions about Brain Out Screw

### What is Brain Out Screw: Nut Bolt Jam?

Brain Out Screw: Nut Bolt Jam is a logic puzzle game where players unscrew nuts and bolts in the correct sequence to drop wooden pieces. It features hundreds of handcrafted levels with realistic physics and no time pressure.

### How do you play Brain Out Screw: Nut Bolt Jam?

To play, tap to select a bolt or nut, then rotate to unscrew it. Carefully plan each move to ensure all wooden pieces drop and clear the board. The game emphasizes planning and logic over speed.

### Can I play Brain Out Screw: Nut Bolt Jam offline?

Yes, offline play is supported for Brain Out Screw: Nut Bolt Jam. This means you can enjoy the puzzle-solving experience without needing an internet connection.

### What devices does Brain Out Screw: Nut Bolt Jam support?

Brain Out Screw: Nut Bolt Jam is available on iPhone, iPad, and iPod. It is designed for iOS devices.

### Is Brain Out Screw: Nut Bolt Jam suitable for all ages?

The age rating for Brain Out Screw: Nut Bolt Jam is 12+. This indicates it is intended for users aged 12 and above.

### How often is Brain Out Screw: Nut Bolt Jam updated?

The latest version of Brain Out Screw: Nut Bolt Jam is 1.1.3, and it was last updated on January 19, 2026. Updates typically bring new levels or improvements.

### Does Brain Out Screw: Nut Bolt Jam have ads?

Yes, Brain Out Screw: Nut Bolt Jam contains advertisements. It is a free-to-play game that supports its development through ads and in-app purchases.

### What makes Brain Out Screw: Nut Bolt Jam unique?

The game offers a relaxing yet brain-challenging experience with realistic screw and bolt physics, handcrafted levels, and no time limits. Its focus on logic and planning provides a satisfying puzzle-solving journey.

## Version history (last 5 releases)

### 1.1.3 — 2026-01-19

- Fixed known issue

### 1.0.9 — 2025-11-22

- Fixed known issue

### 1.0.8 — 2025-08-25

Update 1.0.8, August 25th. Update contents:
- Adjusted the ad logic to improve the ad experience.
- Optimized the in-app event management logic.

### 1.0.7 — 2025-08-15

Update 1.0.7, August 15th. Update contents:
- Adjusted the ad logic to improve the ad experience.
- Optimized the in-app event management logic.

### 1.0 — 2025-08-12

No release notes.

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## More apps by 昕欣 赵

- [Tile Triple Match: 3D puzzle](https://appshunter.io/ios/app/tile-triple-match-3d-puzzle/id6749042111)
- [Otaku Onet: Anime & Manga](https://appshunter.io/ios/app/otaku-onet-anime-and-manga/id6755921360)

All apps by 昕欣 赵: https://appshunter.io/developer/1828548091

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-15.*