Get this app

Please sign in before purchasing (Why?)

Sign in
Sorry, this item is not available in
Image not available for
Image not available

Sentinel 3: Homeworld

by Origin8 Technologies Ltd.
Rated: Guidance Suggested
4.2 out of 5 stars  See all reviews (201 customer reviews)

Price: $1.99
Sold by: Amazon Digital Services, Inc.
Available instantly
Offers in-app purchases
By placing your order, you agree to our Terms of Use

Latest Updates

What's new in version 1.2.7
  • - Fix for IAP unlock/refund/restore problems
  • - Now includes some of the additional required data
  • - Various other fixes
  • -
  • Look out for Sentinel 4: Dark Star coming mid 2014!

Product Details

  • ASIN: B005R1YPEY
  • Release Date: September 30, 2011
  • Rated: Guidance Suggested This app may include dynamic content. What's this?
  • Average Customer Review: 4.2 out of 5 stars  See all reviews (201 customer reviews)
  • Amazon Best Sellers Rank: #6,220 Paid in Appstore for Android (See Top 100 Paid in Appstore for Android)
  •  Would you like to give feedback on images?

Product Features

  • Play this exciting tower defense game
  • Wade into the battlefield yourself and support your troops in your powered armor
  • Buy and place over 20 unit types and abilities
  • Customize your weapons in the Armory
  • Choose either classic or endless mode
  • Enjoy HD graphics and exclusive music

Product Description

The biggest instalment of the award winning Sentinel sci-fi tower defense series - is now here on Android!
Take the fight to the alien homeworld and unleash a massive arsenal of weaponry & get up close and personal on the battlefield in your power armor to execute devastating attacks and support your defenses!


* A gruelling campaign across 20 unique environments!
* A powerful commander unit which can level up and gain new abilities as you play!
* Over 20 unlockable turrets, orbital ship weapons, automated drones and abilities at your disposal!
* Customize your weapon loadout in the Armory to match the demands of the mission.
* Stunning graphics & fx - also in HD!
* Endless modes for all maps!
* Classic mode allows you to compete for scores in a pure skill-based game mode!
* View strategic layouts from the leaderboards - see how the best players think!
* Exclusive music by Specimen A!

Good luck, Commander.

Thank you for playing Sentinel 3: Homeworld and your fantastic worldwide support - keep those positive reviews coming!

Technical Details

  • Size: 43.2MB
  • Version: 1.2.7
  • Developed By: Origin8 Technologies Ltd.
  • Application Permissions: (Help me understand what permissions mean)
    • Open network sockets
    • Write to external storage
    • PowerManager WakeLocks to keep processor from sleeping or screen from dimming
  • Minimum Operating System: Android 2.1
  • Approximate Download Time: More than 5 minutes

Customer Reviews

Most Helpful Customer Reviews
15 of 18 people found the following review helpful
5.0 out of 5 stars Maybe the Best Tower Defense Game Out There... November 16, 2011
Verified Purchase
I'm not normally a huge tower defense game fan...but with that said, I do have quite a few of them, because they are a great game type to play on the go on a phone or an iPod.

I have played Sentinel 3 several times, and I have to say it's probably the first one of these types of games that has drawn me in instantly and just kind of hooked me.

A note on the graphics...downloading and installing the HD graphics pack will take up quite a bit of memory, about 40 MB, but it's definitely worth it.

On the Kindle Fire, the graphics SCREAM!!! They look simply amazing.

It's a great game, that has exceptional graphics. If you have the device that can run it in HD, do yourself a favor and run it that's spectacular!!!
Was this review helpful to you?
10 of 12 people found the following review helpful
5.0 out of 5 stars I like this game - and I don't normally play games October 15, 2011
Verified Purchase
I bought this and have tried it on my Sammy GS2 ... and Acer Tablet. Works great on both - of course easier on my aging eyes on the Tablet.

I can't say what the non-HD graphics look like - since I downloaded the HD add-on pack right away - and pretty impressive -- to the point of almost overwhelming. Before this -- Field Runner is my experience with Tower Defense games --- and I really like that game too. Sentinel 3.. I am going to guess is a bigger hit for those that play games more than me ... my goal is to clear my mind and relax - and S3 may be a little too challenging for that!
Comment | 
Was this review helpful to you?
4 of 4 people found the following review helpful
2.0 out of 5 stars Problem with in game purchases...beware! March 29, 2013
Verified Purchase
I really enjoy this game, it is both addicting and fun. I have played through almost the entire campaign and have few complaints. The levels are often repeated and do become a little repetitive, that really is the only con I've experienced. That is until I had to start over due to device issues. The game has a built in store that offers to unlock all armor, towers, and levels for a small fee for each one. Not wanting to start all over, I purchased all but the levels. Everything unlocked fine and I enjoyed all the unlocks I had worked so hard for previously.

Upon exiting and starting the game again the game informed me that all my unlocks had been refunded. However the options to buy them are checked and state that they are purchased. I have no upgrades upon starting the campaign. This is very frustrating as I haven't seen any notice on my credit card of a refund. This stinks and I would recommend avoiding any in game purchases... maybe even the game itself. Beware!
Comment | 
Was this review helpful to you?
2 of 2 people found the following review helpful
4.0 out of 5 stars Awesome game December 19, 2011
By Cybear
Verified Purchase
This is an awesome game but the reason I don't give it a five star rating is because it doesn't update like the one on android market. Hope amazon fix this.
Comment | 
Was this review helpful to you?
1 of 1 people found the following review helpful
5.0 out of 5 stars Amazon should update! March 11, 2012
By Muggzy
Verified Purchase
Great game, I should have bought it from Android market though because Amazon is like 4 versions behind the current release.
Comment | 
Was this review helpful to you?
1 of 1 people found the following review helpful
3.0 out of 5 stars update! March 1, 2012
Verified Purchase
please update this app to the latest version. The latest has no openfient. Other then the lack of the most recent update this tower defense game is quality.
Comment | 
Was this review helpful to you?
1 of 1 people found the following review helpful
4.0 out of 5 stars Very Enjoyable December 18, 2011
Verified Purchase
Having a campaign character that improves the more you play is pulled off extremely well in this game. I also liked being able add towers while the game was paused.

needs work on time mechinism. I play solely on fast forward and that's not fast enough. on ff for the entire level and the final level still takes an hour and twenty minutes.

easily worth $2 buy it
Comment | 
Was this review helpful to you?
1 of 1 people found the following review helpful
1.0 out of 5 stars If I could give it zero stars I would! December 16, 2011
Verified Purchase
This was an impulse buy because I saw the high ratings, low price and the claim of HD graphics. It is a total failure on a Kindle Fire. The App installs easily and asks you to open it. It then advises you that you have to download one of two possible data package selections. The first is 19 MB for normal graphics and the second is 40 MB for HD graphics.

Now comes the rub. I experienced 10 consecutive failures to download the data packages. I tried the HD one 7 times and then it fails at various levels of installation from 20 to 75%. Once it even told me that the server had the incorrect file size on it and failed. I then tried the 19MG download and it failed 3 times at installation levels of 10 to 90 %.

I give up. Do not buy this program until they fix it if you have a Kindle Fire. Even though it is rated highly, I wish I had read the negative reviews before for I purchased it. I wasted 90 minutes trying to install it and gave up!
Comment | 
Was this review helpful to you?
Most Recent Customer Reviews
5.0 out of 5 stars great tower defender game
the price is justified, wish they would release more content and games. I haven't found a comparable game and there seems to be a real lack of strategy games for tablets.
Published 6 months ago by Andrew Meadows
5.0 out of 5 stars THE #1 tower defense game
excellent graphics and addicting gameplay make this tablet eyecandy a game worth looking into. the game is simple enough: protect the area from waves of intruders, with the weapons... Read more
Published 7 months ago by misterlucky
5.0 out of 5 stars Excellent game!!! does not need internet connection to work.
this game is one of the best strategy games out there. Easy to learn once you know how to play you're hooked. Read more
Published 10 months ago by J. Melgar
4.0 out of 5 stars Sentinel
This is a really cool tower defense game. The graphics are really good. I wonder if they couldn't have given a little more thought to make the strategy more interesting. Read more
Published 14 months ago by Atrain
5.0 out of 5 stars Really fun game.
Awesome tower defense game. Great soundtrack, good pace of upgrades, and more. HD pack looks great on any 1080p device.

Would recommend.
Published 15 months ago by Bradley
5.0 out of 5 stars A nice strategy game
I'm into a game I can not devote 100% of my attention to because of none stop family around me allow me to set a strategy and for a few minutes watch it then make chances and now... Read more
Published 18 months ago by R. Larson
4.0 out of 5 stars Great Game but....
I also had the trouble of all my levels being refunded but it is only a glich, by starting level one then exiting it all your levels come back. Read more
Published 19 months ago by Navy Papa ATCS
5.0 out of 5 stars Excellent!
This game is incredible. It has a multitude ofdifferent modes to try and even two different characters! Leveling takes quite a while but that's a plus. Read more
Published 20 months ago by S. Smith
4.0 out of 5 stars Addictive but not inspiring
Sentinel 3 is a great-looking tower defense game.

It's good if you just want to kill some bad guys for a couple minutes, but it's not great for long stretches because it... Read more
Published 23 months ago by Adric R. Riedel
5.0 out of 5 stars The best Tower Defense game available for tablets.
If you enjoy gaming, do yourself a favor and by this games. The quality is top notch across the board and it's priced very resonably. Read more
Published on January 1, 2013 by rjh
Search Customer Reviews
Search these reviews only


Topic From this Discussion
Problems installing Sentinell on Kindle Fire
I have the exact same issue...i have tried repeatedly to download either the required 19mb or the optional 40mb and "cannot connect to server" it than says to "check my internet connection". This is really frustrating and if anyone can help I would appreciate it. oh yeah i... Read More
Sep 10, 2012 by T. Bridgewater |  See all 2 posts
Have something you'd like to share about this product?
Start a new discussion
First post:
Prompts for sign-in

Search Customer Discussions
Search all Amazon discussions

Look for Similar Items by Category

Amazon Appstore Return Policy