Average Playtime: 5 hours

Alien Shooter TD

Add to
My games
Add to
Save to

Click to rate



Be careful when downloading the game: you run the risk of escaping the real world for a long time to get completely absorbed in saving the Earth from the imminent threat!

We are happy to present our innovative game in the genre of Tower Defense inspired by the legendary Alien Shooter series! Here you will not just build towers to protect your territory, but will also get in charge of a platoon of elite warriors. Each one of them has their own field of specialization, unique features, as well as development possibilities. It is also possible to equip each class of warriors with weapons of your choice.

The attack is under way. The armed forces are mobilized. Violent battles are happening across the whole globe.
You are the commander of an elite warrior platoon and find yourself in the midst of large-scale war events, and your actions will determine whether blood-hungry monsters will destroy our planet, or if humanity will come out victorious!

The game was created in keeping with the best traditions of Sigma games, no concessions of any kind - everything is just like in real life!

  • Totally real-life presentation of events – there is a limited munitions stock for each weapon, and it has to be replenished during combat.
  • Powerful supply crates that include ammunition, weapons, coins, and ammo.
  • Your enemies’ dead bodies don’t disappear - wait to see what happens when you finish each level!
  • Seven character classes with unique characteristics and development possibilities.
  • Hundreds of types of weapons – equip your troops according to your personal gaming style.
  • Any kind of weapon can be modified by expanding its basic features. You can disassemble it and get money, as well as auxiliary supplies.
  • Send your troops to get training, so they can develop a variety of combat skills.
  • By combining different kinds of forces, you can develop your own tactics needed to accomplish each mission.
  • In a critical situation, you can use bombs land mines, as well as supply Drones that will momentarily replenish munitions stocks for all the combatants.

And, of course, in keeping with our traditions, there are unprecedented crowds of monsters, plenty of bloodshed and explosions, as well as many other things you would usually see when you play our games on your devices!
Release date
Sigma Team
Sigma Team Inc.
Sigma LLC, Sigma Team Inc.
Age rating
17+ Mature

System requirements for iOS

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, iPad Mini 5, iPad Mini 5 Cellular, iPad Air 3, iPad Air 3 Cellular, iPod Touch Seventh Gen, iPhone 1 1, iPhone 1 1 Pro, iPad Seventh Gen, iPad Seventh Gen Cellular, iPhone 1 1 Pro Max

System requirements for Android

4.0 and up

System requirements for PC

  • OS: Windows 7 (service pack 1), 8, 10
  • Processor: Intel Core 2 Duo T5200 @1.6GHz / AMD Athlon 64 X2 3600+ @2000MHz or better
  • Memory: 2 GB RAM
  • Graphics: 512 MB video card
  • Storage: 500 MB available space
Edit the game info
Last Modified: Oct 22, 2019

Where to buy

App Store
Google Play

Top contributors


1 edit
Alien Shooter TD - Innovative Tower Defense inspired by Alien Shooter!
Jul 27, 2016
Sigma Team
Let's Look At - Alien Shooter 2: Conscription [PC]
May 22, 2012
May 27, 2017
NickFrost Play
ALIEN SHOOTER TD - Alien Shooter TD Gameplay - Part 1
Jan 15, 2017
Alien Shooter TD gameplay - Mission 35 - Final BOSS fight (12+)
Jan 19, 2017
Games for Kids
Alien Shooter TD - Innovative Tower Defense inspired by Alien Shooter! Windows version.
Feb 9, 2017
Sigma Team
View all videos
15,323 items
Wipe out 500000 aliens.
Major Expert
Complete 35 different missions in an expert mode, earning gold shields.
Complete 35 different missions on hard level, earning gold stars.
Kill the Boss in mission №40 on hard level of difficulty.
Kill the Boss in mission №35 on hard level of difficulty.
view all achievements
21 items

Alien Shooter TD reviews and comments

Translated by
Microsoft from Deutsch
After just over 57 Hours Of play, I finally have all The Achievements. The Most nervous Thing was to kill 500,000 Aliens. The "Thumbs up" already shows that I recommend it, but I list the negative Aspects that bother me or that I missed. 1. Multiplayer. By that I just mean Coop with a Friend. For two, the Game would have been far more Fun. 2. I already had the best Legendary weapons at Level 15 (out of 40) (only Bazooka and Light Energy Forces are available as a Reward for the highest level of Difficulty). From then on, neither money nor Boxes, nor any other Reward was of Interest. 4/5 of the Game was then just trying to create everything (5 Difficulty levels, 8 Survival, achievements etc.). 3. Flight aliens too powerful. There's nothing Explicitous against them. In Survivals, the quasi OUR ARE the Reason why you lose. Not even the Satellite Cannon Hits these Critters. Freezing is also not possible. Snipers probably make the most sense if they would concentrate on the Airmen. 4. If you have played through the Game (easy enough), then you get the Satellite Cannon, but it is absolutely pointless in the later Course Of the game. Is as dangerous as a Mosquito Bite, because there is nothing noticeable about Enemies anymore. Even with 500% Charging. 5. Without Masses of Mines and Dynamite, you can't get the highest Degree of Difficulty (click red skull!). Frying 500 Pieces in the first two Waves is not uncommon. 6. Ammunition drones significantly overturn Balancing. Hardly anything, you get them massively in the Game (E.g. Boxes) and they make the Game much easier. 7. Bazooka type praitesely pointless. Has over 200k of damage, but clench only the Armor, with ALL Aliens in the late game without End Armour. What he's super capable of is hurling Aliens through the Area, so also Heading towards The destination! Fingers off! Especially since it takes up as much Space as 4 "normal" units. 8. It has annoyed me all Along that I can't even click an Alien to look at the Name and other Values without marking it as the Main Goal and firing all the Units at that alien. 9. Move the Camera by holding and pulling the left Mouse button? Clear! Just stupid that in the Zeal of Battle you click on all sorts of destructible objects and order all your Units to fire at them. I have already lost one map or another. (To allow a single Cary to pass through is almost already considered lost. You will know what I mean when You play it yourself). 10. A Bug has cost me the Victory from time to time. For example, If a destructible barrel stood too close to the Aliens ' Target and it was moved by an Explosion, it pulled me off a Point as if an Alien had come through. 11. Fire and Ice lift each other up. Realistic? May Be, but without any Info is doof. The flamethrower type is therefore virtually useless, as you would always take the Cryo (Ice). Even worse, The Light Energy Forces can also remove the Ice if you skillate their Skill "Ignition," because that sets Aliens on Fire. So NOT Impregnation skiles! 12.5 Difficulty Levels per Map are just too much. 40 * 5 means you have to play 200x and then come the Survivals! Don't Get me wrong, I am also into Long-term Motivation, but as I mentioned at The beginning, I had already unlocked everything in weapons at level 15 and all the Units were completely eliminated. If you have managed a Map on "Hard," then you still have to create TROTZDEM "normal" and "easy." For what?! 13. Only 2 Boss Fights, which are then also completely lame. On the two highest Levels of Difficulty, the Bosses themselves no longer show up at all, but only on easy, normal and hard. 14. Maps either far too light or hölleschwer. No matter what Number the Map carries. 15. The first few Waves are always the Heaviest. If you Manage them, the Rest is just a Clack. (Exception, of course: Survival.) 16. In the Survival you place all the units and let the Game run at full Pace for 20-40 Minutes, then Mine Spamming without End ... * yawn * Honestly, I could list even further, but why? The Game narrowly got Thumbs up because it entertained me well and didn't cost much. Replay Value unfortunately 0 If it Would have a Coop, then it would look completely different again.
read more