# Shells - Nested Block Puzzle — Slide your way out!

> Nested block sliding puzzle game with over 360 levels and a calming soundtrack. (iPhone/iPad app by arlybird games LLC.)

- Source: https://appshunter.io/ios/app/shells-nested-block-puzzle/id6661020395 (this page in markdown: same URL + `.md`)
- Developer: [arlybird games LLC](https://appshunter.io/developer/1764665157)
- Category: Games, Puzzle
- Price: Free with in-app purchases
- Rating: 5.00/5 from 22 App Store ratings · 11 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 102 MB
- Languages: American English
- Released: 2024-10-07
- Data updated: 2026-06-01
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/shells-nested-block-puzzle/id6661020395/reviews.md

## What is Shells?

Shells is a geometry puzzle game about the elegance of nested pieces on a tiny board.
Slide your block into larger shells to rearrange the board and find your way out!

Features:
- Simple core mechanics and deep emergent complexity packed into a compact 4x4 grid. Train your brain by challenging your problem solving and spatial reasoning skills!
- Gradual difficulty curve featuring over 360 original levels spread across 8 distinct worlds.
- Flexible progression structure with multiple levels to choose from at any given point.
- Adjust the difficulty to your liking with the optional hint system!
- Soothing piano soundtrack accompanied by relaxing sound effects and backgrounds.

## Key features

- Nested block sliding mechanics
- Over 360 original levels
- 8 distinct game worlds
- Optional hint system
- Soothing piano soundtrack
- Compact 4x4 grid gameplay

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Unlimited Bundle | $8.99 | one-time |
| Large Bundle | $3.99 | one-time |
| Medium Bundle | $1.99 | one-time |
| Small Bundle | $0.99 | one-time |


## Recent user reviews (10 of 11)

All indexed reviews: https://appshunter.io/ios/app/shells-nested-block-puzzle/id6661020395/reviews.md

### 5/5 — Unique Puzzle

*2025-05-17*

I love this game. There aren’t any others like it. I would like to request the developer please make a setting for dark mode. I enjoy playing at bedtime and I do not want to interrupt my wife.

**Developer response:** Thank you for the support and the great suggestion - we're now actively looking into dark mode. Stay tuned!

### 5/5 — Best puzzle game

*2025-04-24*

Great brain exercise. This is my third round playing this game after finishing all the levels then resetting the data. My goal is solving all the levels without using hints.

### 5/5 — Relaxing

*2025-04-06*

If you are looking to unwind while also challenging to your mind, this may be the game for you. I found the game to be incredibly relaxing with fun gameplay and a soothing sound track.

### 5/5 — Seriously engaging, challenging, fun and addictive — everything you want in a game.

*2025-01-16*

This game has it all: mind-boggling challenges followed by euphoria when challenges are overcome; increasing difficulty throughout; endless fun. I’m addicted to it.

### 5/5 — fun puzzle game

*2024-12-16*

Great puzzle game. Quite hard to reach World 7, it's taking a lot of my time.

### 5/5 — Fun and relaxing at the same time

*2024-11-01*

I really really enjoy this game!! The music, art, and the puzzles are so well designed

### 5/5 — Great game

*2024-10-19*

This is a perfect little game to play on commute. I found it very easy and enjoyable to play for a few minutes everyday on the train to and from work. I generally tend to lose interest in puzzle games easily because they’re either too easy or too hard, but this game really strikes the perfect balance in terms of difficulty. Overall an amazing game.

### 5/5 — Beautiful puzzles!

*2024-10-13*

I’ve been playing this on my commute. Great way to start the day! Some levels are easy and some are hard, so it’s nice that I can choose from a few levels at a time.

### 5/5 — Simple, intuitive, fun.

*2024-10-08*

Concept is simple, and the game mechanics are designed in a way that it's intuitive and fun. Perfect for puzzle-lovers who enjoy spending a couple minutes throughout the day challenging themselves with interesting problems. Animation, music, and sound effects are a great touch.

### 5/5 — Fun and challenging

*2024-10-08*

Fun and challenging puzzle game with nice music! Some levels are a bit of a head scratcher but the hints near the exit and the skippable level progression help a lot.

## Frequently asked questions about Shells

### What is Shells gameplay like?

Shells is a geometry puzzle game where you slide blocks into larger shells on a 4x4 grid to rearrange the board and find your way out. It focuses on problem-solving and spatial reasoning.

### How many levels are in Shells?

Shells features over 360 original levels spread across 8 distinct worlds, offering a gradual difficulty curve.

### Can I adjust the difficulty in Shells?

Yes, you can adjust the difficulty to your liking with the optional hint system available in Shells.

### Does Shells have ads?

Yes, Shells contains advertisements.

### What devices does Shells support?

Shells is available on iPhone, iPad, and iPod.

### What is the age rating for Shells?

Shells has an age rating of 4+.

### Is Shells free to play?

Shells is free to download and play, with optional in-app purchases available.

### When was Shells last updated?

Shells was last updated on January 25, 2026.

## Version history (last 5 releases)

### 1.0.63 — 2026-01-25

- Updated in-app purchasing library.
- Updated age rating information.

### 1.0.62 — 2025-03-15

- Updated app information

### 1.0.61 — 2025-03-15

- UI/UX improvements
- Updated soundtrack

### 1.0.5 — 2024-12-01

▪ UI/UX improvements
▪ Updated credits

### 1.0.4 — 2024-10-20

▪ Updated UI to accommodate screen safe areas.

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## Related topics

[puzzle nest](https://appshunter.io/ios/topics/puzzle-nest)

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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 2026-06-01.*