Average Playtime: 2 hours

Sentinel 3: Homeworld

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The biggest installment of the award winning Sentinel sci-fi tower defense series now on PC!
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!

* An epic campaign across 20 levels.
* 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.
* NEW: Includes new content featuring new commander, enemies, campaign, weapons and more!
* Endless modes for all maps.
* NEW: Steam Achievements
* Classic mode allows you to compete for scores in a pure skill-based game mode.
* Exclusive music by Specimen A.
Release date
Origin8 Technologies
Strategy First, Origin8 Technologies
Age rating
Not rated

System requirements for macOS

System requirements for PC

  • OS: Windows Windows Vista or Windows 7
  • Processor: 1.2GHz+ Processor
  • Memory: 1 GB RAM
  • Graphics: OpenGL 1.3 gfx card/driver with 128+MB Video Ram
  • Storage: 300 MB available space

System requirements for Android

4.0 and up

System requirements for iOS

iPhone 3G S, iPad Wifi, iPad 3G, iPod Touch Third Gen, iPhone 4, iPod Touch Fourth Gen, iPad 2 Wifi, iPad 2 3G, iPhone 4S, iPad Third Gen, iPad Third Gen 4G, iPhone 5, iPod Touch Fifth Gen, iPad Fourth Gen, iPad Fourth Gen 4G, iPad Mini, iPad Mini 4G, iPhone 5c, iPhone 5s, iPad Air, iPad Air Cellular, iPad Mini Retina, iPad Mini Retina Cellular, iPhone 6, iPhone 6 Plus, iPad Air 2, iPad Air 2 Cellular, iPad Mini 3, iPad Mini 3 Cellular, iPod Touch Sixth Gen, iPhone 6s, iPhone 6s Plus, iPad Mini 4, iPad Mini 4 Cellular, iPad Pro, iPad Pro Cellular, iPad Pro 9.7, iPad Pro 9.7 Cellular, iPhone SE, iPhone 7, iPhone 7 Plus, iPad 6 1 1, iPad 6 1 2, iPad 7 1, iPad 7 2, iPad 7 3, iPad 7 4, iPhone 8, iPhone 8 Plus, iPhone X, iPad 7 5, iPad 7 6, iPhone X S, iPhone X S Max, iPhone X R, iPad 8 1 2, iPad 8 3 4, iPad 8 5 6, iPad 8 7 8, Watch 4, iPad Mini 5, iPad Mini 5 Cellular, iPad Air 3, iPad Air 3 Cellular, iPod Touch Seventh Gen
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Last Modified: Nov 11, 2022

Where to buy

Google Play
App Store

Top contributors


1 edit
Alien Extinction
Kill 1,000,000 aliens
Hero Commander
Reach maximum commander level
Classic Assault 6
Classic map 6 has been completed in assault mode
Classic Assault 3
Classic map 3 has been completed in assault mode
Able Commander
Unlock all commander abilities
view all achievements
47 items
Homeworld 3 : Announce Trailer
Homeworld 3 : Fig Campaign Announce
View all streams
2 items

Sentinel 3: Homeworld reviews and comments

Translated by
Microsoft from French
A pretty classic Tower Defense but quite interesting. The graphics are not the most advanced but suffice, the little varied soundtrack is rhythmic, dynamic and adapted. Many maps and game modes (campaign, endless, classic, 4 difficulty levels: easy to psycho), challenge enthusiasts you will find your happiness. You will have to cling to get the 1 million aliens exterminated... There are two campaigns that allow to unlock all the turrets and all the bonuses of the two méchas, in fact, we have a kind of Mecha that is in support of the towers. A system of points of experience also allows to perfect a little more. The first series of cards (20) is rather easy to access by cons the second (15) is more full-bodied and therefore will ask for a little more reflection and perseverance (do some missions in endless to win XP if needed). Also, to get to the maximum level, you will have to chain some parts to accumulate XP and money needed to buy all the slots ($5000 the last!) and skills. It should be noted that even if one fails, one recovers a little experience and under what lightens a little the disappointment of the game over. Despite the repetitive side, it's a pretty addictive game as little as this type of game, in addition, the game backs up your progression which allows to pause even during a long mission. It is often at very low prices, amateurs of the genre try it! Bug: sometimes (but very rarely) impossible to clicker... game to raise, I have the impression that it is at the opening of the game (when the small Windows steam appear) if one rushes too.
Translated by
Microsoft from Italian
A Really nice game, fun and exciting. It takes You and involves you. The only flaw is perhaps in the graphics of some backgrounds, a little ' too confusing, unclear. Anyway, a really well-made tower defense, one of the best ever. To have.
Translated by
Microsoft from Dutch
One of the most boring tower defense games I've played in years. All the levels are similar and the challenge is far to look. I really don't understand any fuss about this game; If you're looking for a really good TD game, buy Kingdom Rush and don't waste your money!
Translated by
Microsoft from Dutch
Why has it never been updated for 4" displays? This was one of my best TD along with Fieldrunners. I still check often to see if it's updated but it's still not. Too bad. I'll leave it at 4-stars because I have enjoyed this game a lot! Most games I would give a 2/3-star or less at this state.
Translated by
Microsoft from French
A good game as we love them with all that is needed to hang the first few minutes of play. Besides the gameplay and the graphics what I especially liked is that this game is not one of those for which you have to pay to advance and this makes in my opinion a real difference. Don't ask yourself the question!!!!
Translated by
Microsoft from Deutsch
This Game has absolute addictive Potential for me, who hardly plays on the iPad. I first Bought it on the Ipad2, when I had an Android Tablet for a Short time, this Game was also bought because I didn't want to give up on it. Today I am an ipad user again and am regularly happy to be able to use this Game.
Translated by
Microsoft from Deutsch
.... Part 1 and two are easy and clear to use. With the 3 Part, there are already so many Extra Options that it gets tight on the small Screen. Not as clear as the two Predecessors. The Commander is completely superfluous. Gaming is not neglected by Strategy fans, as the Maps on Hart are harder to crack than with their Predecessors.
Translated by
Microsoft from Deutsch
The first Success in each Level quickly occurs, but just as quickly the Difficulty increases and then finding the right Spin is really not easy and demands many Sacrifices. I just think it'S a Pity that the game plans jump on the currently freely played with each screen touch and that you can't even swap one or the other With the limited Number of weapon slots-or do I lack the deeper Bounce for the Function?
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