# Earth Defense : Idle Simulator — Kill Demons and Save the Earth

> Incremental tower defense game to defend Earth from demons. (iPhone/iPad app by Artifact Corp..)

- Source: https://appshunter.io/ios/app/earth-defense-idle-simulator/id6469688943 (this page in markdown: same URL + `.md`)
- Developer: [Artifact Corp.](https://appshunter.io/developer/1411133510)
- Category: Games, Action, Simulation
- Price: Free with in-app purchases
- Rating: 4.50/5 from 15 App Store ratings · 33 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 202 MB
- Languages: American English
- Released: 2023-10-31
- Data updated: 2026-08-23
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/earth-defense-idle-simulator/id6469688943/reviews.md

## What is Earth Defense?

Demons have invaded The Earth! 
Make Our Earth the strongest!
Earth Defense is an incremental tower defense game with cute characters. Control the Earth. Make the Earth Perfect with your choices! Don't let down humanity by a single defeat. What doesn't kill you only makes you stronger. With permanent upgrades, Our Earth is only going to be Stronger!

The Earth Features

- A Tower Defense that is easy, straightforward, and highly engaging.
- Unlocks Earth's new abilities with the resources you gathered.
- Collect various Skill Cards. It will make significant changes fast.
- Recruit researchers from all around the world to study diverse abilities.
- If you are strong enough, leave it idle to become even stronger!

## Key features

- Incremental tower defense gameplay
- Unlock new Earth abilities
- Collect and use Skill Cards
- Recruit researchers
- Idle progression system
- Permanent upgrades

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| 220 Diamonds | $12.99 | one-time |
| 360 diamonds | $17.99 | one-time |
| buying 100 diamonds | $5.99 | one-time |
| Remove Ad | $9.99 | one-time |
| Chapter 1 Clear Reward | $2.99 | one-time |
| Chapter 2 Clear Reward | $2.99 | one-time |
| Chapter 5 Clear Reward | $2.99 | one-time |
| Chapter 3 Clear Reward | $2.99 | one-time |
| Chapter 4 Clear Reward | $2.99 | one-time |
| Chapter 15 Clear Reward | $2.99 | one-time |
| Chapter 14 Clear Reward | $2.99 | one-time |
| Chapter 16 Clear Reward | $2.99 | one-time |
| Chapter 18 Clear Reward | $2.99 | one-time |


## Recent user reviews (10 of 33)

All indexed reviews: https://appshunter.io/ios/app/earth-defense-idle-simulator/id6469688943/reviews.md

### 1/5 — 클라우드 저장

*2025-12-27*

패드에 깔아서 하다가 재밌어서 폰에서도 하려고 하는데 클라우드 저장이 아예 안됌👎👎👎👎 개별로👎👎👎👎👎👎👎👎👎👎

### 1/5 — 튕김

*2025-11-25*

11챕터 110웨이브 근처에서 계속 튕기네 이것 좀 해결해라 광고제거도 샀다 부탁한다

### 3/5 — ㅋㅋㅋㅋ

*2025-08-30, version 69*

재민다

### 3/5 — 광고 심함

*2025-02-05*

솔직히 광고가 1분인거는 너무한거아닌가요

### 5/5 — 🌟🌟🌟🌟🌟

*2024-12-02*

Great game well built and has a lot to do. keep working and it will do great

### 1/5 — 기술카드 어케 뽑나요

*2024-09-28*

기술카드 뽑는 부분부터 할 수 있는 게 없음 어떤 터치도 먹지 않음

### 5/5 — Verygood‼︎

*2024-09-06, version 69*

チュートリアルのテクニカルカードが引けないので、改善お願いします。
There is a bug that prevents you from proceeding further with the tutorial.
You cannot draw free cards at first.

### 1/5 — Fix this please

*2024-08-12*

When I’m going towards the second mission,the text gets glitched making it impossible for me to move on

### 1/5 — しよーもない

*2024-08-11, version 69*

チュートリアルのガチャ引く場面で不具合なのか
反応せず進まないとんでもないゴミゲー

### 1/5 — 100 스테이지 이후로 튕김 왜 안고치는거임

*2024-05-12*

벌써 많이들 겪는 증상같은데 진행이 1도 안댐 이어하기도 아니라 처음부터 다시시작인데

## Frequently asked questions about Earth Defense

### What is Earth Defense: Idle Simulator?

Earth Defense: Idle Simulator is an incremental tower defense game where players defend Earth from a demon invasion. The game focuses on making strategic choices to strengthen the planet through permanent upgrades and unlocking new abilities.

### What are the key features of this game?

Key features include straightforward and engaging tower defense gameplay, unlocking new Earth abilities with gathered resources, collecting Skill Cards for rapid changes, recruiting researchers to study diverse abilities, and an idle progression system that makes the Earth stronger over time.

### How does the game make money?

The game is free to download and play, but it includes in-app purchases and advertisements. This allows players to enhance their experience or progress faster through optional transactions.

### What is the main goal of the game?

The main goal is to defend Earth from a demon invasion and make it the strongest planet possible. Players achieve this by strategically upgrading Earth's defenses, abilities, and research capabilities.

### Can I play this game offline?

While the description highlights an 'idle' progression system, it doesn't explicitly state offline play capabilities. Typically, idle games require an internet connection to track progress and potentially for ad delivery or in-app purchases.

## Version history (last 5 releases)

### 69 — 2024-01-09

Bug fix

### 9 — 2023-11-30

bug fixed

### 8 — 2023-11-23

bug fixed

### 7 — 2023-11-22

buf fixed

### 6 — 2023-11-16

bug fixed

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All apps by Artifact Corp.: https://appshunter.io/developer/1411133510

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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 2026-08-23.*