# SAS: Zombie Assault TD HD

> Strategic tower defense game against zombie hordes with upgradeable units and power-ups. (iPhone/iPad app by Ninja Kiwi Limited.)

- Source: https://appshunter.io/ios/app/sas-zombie-assault-td-hd/id588575192 (this page in markdown: same URL + `.md`)
- Developer: [Ninja Kiwi Limited](https://appshunter.io/developer/386241773)
- Category: Games, Entertainment, Action, Strategy
- Price: Free with in-app purchases
- Rating: 4.38/5 from 670 App Store ratings · 164 written reviews indexed
- Age rating: 12+
- Requires: iOS 4.3 · 97 MB
- Languages: English
- Released: 2013-02-14
- Data updated: 2026-08-24
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/sas-zombie-assault-td-hd/id588575192/reviews.md

## What is SAS?

Hordes of undead are approaching! Your mission is simple - throw everything you have at them and stop them in their tracks. Deploy your elite soldiers, automated turrets, and defensive barriers in strategic locations throughout each unique map. You are the last defense against the Zombie Assault!

From the makers of the critically acclaimed shooter SAS: Zombie Assault 3 and the top strategy game Bloons TD 5 comes an incredibly challenging tower defense game in the Zombie Assault universe. Challenge yourself to keep the hordes at bay across 7 maps, each with Normal, Elite, Nightmare or Apocalypse modes. Pass each map to earn achievements and unlocks, and also earn valuable SAS dollars to unlock powerful top tier upgrades and buy helicopters, airstrikes, and even nukes to help you survive. Get free one-time-use powerups every 5 levels, too!

Check out these cool features:
★ Free tower defense game from the makers of SAS: Zombie Assault 3 and Bloons TD 5
★ Create mazes, chokepoints, and barriers with your towers for ultimate strategic control
★ Awesome soldier and sentry gun towers, each with offensive and defensive upgrades and epic top tier powers
★ Amazing temporary powerup items like Cryo Grenades, Necro Nukes, Airstrikes, and Attack Choppers
★ Devastatingly powerful zombie bosses to defeat
★ 7 maps each with unique strategic challenges and freeplay mode
★ 4 difficulty and game modes
★ Leaderboards and Achievements

Optimized for 2048x1536 but still awesome on the old school iPad.

Make sure to use the iCloud data storage to save your progress in case anything happens to your device or app. You can also share data between your iPhone and iPad. And remember you can earn SAS$ by winning maps or by using the "Earn SAS$" button in the Store.

Pro Tip: Use all of the temporary crate powers that you get every 5 rounds - you will need these to survive!

## Key features

- Strategic tower deployment
- Upgradeable soldiers and turrets
- Defensive barrier creation
- Unlockable power-ups and support
- Multiple maps and difficulty modes
- Zombie boss battles

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| All Skills Pack | $19.99 | one-time |
| More SAS Dollars (1,200 SA$) | $4.99 | one-time |
| Remove Banner Adverts | $0.99 | one-time |
| SAS Dollars - Defense Contract (23,000 SA$) | $64.99 | one-time |
| SAS Dollars - Officer's Pay (6,000 SA$) | $19.99 | one-time |
| SAS Power Pack | $9.99 | one-time |
| Wad of SAS Dollars (200 SA$) | $0.99 | one-time |


## What do users think of SAS?

Overall sentiment: positive

**Pros**

- 🚀 Great game
- 👍 Challenging and unique tower defense experience
- 🚀 Addictive gameplay

**Cons**

- 🐛 Crashes and freezes when trying to purchase upgrades
- 🐛 Compatibility issues with newer iOS versions
- 🔋 High difficulty, even on the lowest setting

**Commonly reported bugs**

- Game freezes when trying to purchase upgrades
- Towers disappear and the game crashes
- Incompatibility with iOS 11 and above

**Most requested features**

- Update the game to be compatible with latest iOS versions
- Add an easier difficulty mode
- Introduce new towers, maps, and game modes

## Recent user reviews (10 of 164)

All indexed reviews: https://appshunter.io/ios/app/sas-zombie-assault-td-hd/id588575192/reviews.md

### 5/5 — PLEASE UPDTAE

*2024-07-25, version 1.1*

I used to love playing this game along side SAS 4 but its a shame this sas to gma dis not updated.PLEASE PLEASE update this game to the latest IOS. 
Thanks.

### 5/5 — UPDATE

*2021-03-29, version 1.1*

UPDATE GAME SO I CAN PLAY IT ON MY IPAD

### 5/5 — Please update so it can be played on newer devices.

*2021-01-13, version 1.1*

This was my favorite game. Now I can’t play no more. Very sad. Please update.

### 5/5 — Best game ever

*2020-08-10, version 1.1*

Please please please update the game. I love the game and want to play it again

### 5/5 — Pls update for iOS 11

*2020-07-18, version 1.1*

Pls update to iOS 11

### 5/5 — Needs update

*2020-07-08, version 1.1*

Please please please make this compatible with current iOS I loved this game when it worked so please make it compatible.

### 5/5 — Great but outdated

*2019-12-21*

I used to play this for hours, it’d would get boring, but then I’d always come back. But one time I came back and it said I couldn’t play because I had to high of a IOS version. Can you please update the game for IOS 13?

### 3/5 — Please update

*2019-09-13, version 1.1*

This game needs to be updated for the new iOS versions. I remember playing it though, and it was noice 👌

### 5/5 — About this game

*2019-07-21*

I have play this when it started when the new IOS update I couldn’t play it no more. But this game was my favorite I would always play this game for hours. This game also has everything I needed, the graphics is amazing, certainly one of the best but, pls update a game. Pls pls update

### 5/5 — Please update

*2019-07-18, version 1.1*

It’s a game people play to relief themselves of boredom please update the game 

thank you

## Frequently asked questions about SAS

### What is SAS: Zombie Assault TD HD?

SAS: Zombie Assault TD HD is a challenging tower defense game where players must strategically deploy defensive units and barriers to stop waves of approaching zombies. It features multiple maps, difficulty modes, and upgradeable towers.

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

Key features include creating strategic mazes and chokepoints with towers, unlocking and upgrading soldiers and sentry guns, using temporary power-ups like airstrikes and nukes, battling zombie bosses, and playing across 7 unique maps with various modes.

### How does the game make money?

The game is free to download and play, but it offers in-app purchases. Players can buy SAS dollars to unlock powerful upgrades, helicopters, airstrikes, and nukes, or earn them by winning maps.

### What devices is SAS: Zombie Assault TD HD compatible with?

The game is optimized for high-resolution displays like 2048x1536 but is also compatible with older iPads. It supports iCloud data storage for saving progress and sharing data between iPhone and iPad.

### What are some common use cases for this app?

This app is ideal for players looking for a deep strategic challenge in a tower defense format. It's perfect for passing time with engaging gameplay, testing tactical skills against increasingly difficult zombie waves, and competing on leaderboards.

## Version history (last 3 releases)

### 1.1 — 2013-03-07

Please update - major fixes for debug and save data

### 1.0.5 — 2013-02-27

Bug fixes for Store and general gameplay

### 1.0.2 — 2013-02-14

No release notes.

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## More apps by Ninja Kiwi Limited

- [Bloons TD](https://appshunter.io/ios/app/bloons-td/id331271904)
- [Bloons Super Monkey](https://appshunter.io/ios/app/bloons-super-monkey/id386241770)
- [Power Pool](https://appshunter.io/ios/app/power-pool/id392085544)
- [Zombie Trailer Park](https://appshunter.io/ios/app/zombie-trailer-park/id398941864)
- [Bloons TD 4](https://appshunter.io/ios/app/bloons-td-4/id404553553)
- [Bloons TD 4 HD](https://appshunter.io/ios/app/bloons-td-4-hd/id426415634)

All apps by Ninja Kiwi Limited: https://appshunter.io/developer/386241773

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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 2026-08-24.*