# Light Up - Gray Space — Turn all lights On!

> Free puzzle game to connect circuits and turn on all lights. (iPhone/iPad app by ThunderSpirit.)

- Source: https://appshunter.io/ios/app/light-up-gray-space/id1317580922 (this page in markdown: same URL + `.md`)
- Developer: [ThunderSpirit](https://appshunter.io/developer/1276488005)
- Category: Games, Lifestyle, Family, Puzzle
- Price: Free with in-app purchases
- Rating: 4.80/5 from 9 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 7.0 · 101 MB
- Languages: American English, Japanese, Korean, Chinese (Simplified, China), Chinese (Traditional, Taiwan)
- Released: 2017-12-08
- Data updated: 2026-06-10
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/light-up-gray-space/id1317580922/reviews.md

## What is Light Up?

Light up - Gray Space is a free easy-to-use puzzle game which your job is to turn all lights on !
Simply turn the different circuit blocks by touching them and connect them together to form a complete diagram. 

Peculiar features of the "Light up" game:

- Intuitive gameplay
- Hint system
- From simple to complicated
- Completely suitable for everyone - puzzles for adults, puzzles for children
- There are no move limits for you, but you are provided with a limited time in -
each round, this will give you an opportunity to reveal all your skills and start up the brain 
game without the Internet - play wherever and whenever you want
- Task solving - is useful and always exciting 

The main aim of the game is to plumb the pipeline. You just turn different pipes and plumb the pipeline. At first glance everything is very simply and easily, but a right decision may appear not so simple among the entanglements of various pipes, branchings, taps and pressure sensors.

HOW TO PLAY
• Use all circuit block on the board to connect them.
• Touch to rotate.


The light up puzzle game can be qualified as the best puzzle games for the brain, but at the same time, this is a puzzle adventure, a puzzle for adults and a family puzzle. That is why we are offering you our game, it does not only train your brain but also helps to spend time easily, like the games in the genre of "Match 3" or Physics Puzzles.

## Key features

- Intuitive gameplay
- Hint system
- Progressive difficulty
- Offline play
- Time-limited rounds
- Task solving

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| 20 Hints | $0.99 | one-time |


## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/light-up-gray-space/id1317580922/reviews.md

### 5/5 — Level

*2018-12-13*

More levels that are harder

### 5/5 — Fun puzzle game

*2018-01-02*

Pretty fun actually :D

## Frequently asked questions about Light Up

### What is Light Up - Gray Space?

Light Up - Gray Space is a free puzzle game where players connect circuit blocks to turn on all the lights. It features intuitive gameplay, a hint system, and is designed for all ages, offering a brain-training experience.

### Can I play Light Up - Gray Space offline?

Yes, Light Up - Gray Space can be played without an internet connection. This allows you to enjoy the puzzle-solving challenges wherever and whenever you want, making it a great option for travel or areas with limited connectivity.

### Is Light Up - Gray Space suitable for children?

Yes, the game is described as completely suitable for everyone, with puzzles for both adults and children. Its straightforward mechanics and engaging challenges make it a family-friendly option.

### Does Light Up - Gray Space have ads?

Based on the provided data, the app does not have ads. This means you can enjoy the gameplay without interruptions from advertisements.

### How difficult are the puzzles in Light Up - Gray Space?

The puzzles in Light Up - Gray Space range from simple to complicated, offering a progressive challenge. While the initial stages are easy, the entanglement of pipes and branches can make finding the right decision more complex.

### Are there any limitations on moves in Light Up - Gray Space?

There are no move limits in Light Up - Gray Space. However, each round is provided with a limited time, encouraging players to utilize their skills efficiently to solve the puzzles.

### What platforms is Light Up - Gray Space available on?

Light Up - Gray Space is available on iPhone, iPad, and iPod. It is designed to run on Apple's mobile operating systems.

### When was Light Up - Gray Space last updated?

Light Up - Gray Space was last updated on December 14, 2017, with the latest version being 1.1. The game was initially released on December 8, 2017.

## Version history (last 2 releases)

### 1.1 — 2017-12-14

This app has been updated by Apple to display the Apple Watch app icon.

iPhone X support.
Add new leaderboard.

### 1.0 — 2017-12-08

No release notes.

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## More apps by ThunderSpirit

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- [Slide Src](https://appshunter.io/ios/app/slide-src/id1498929461)

All apps by ThunderSpirit: https://appshunter.io/developer/1276488005

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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 2026-06-10.*