SAS: Zombie Assault 4

Contains adsIn-app purchases
4.5
411K reviews
10M+
Downloads
Content rating
Teen
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About this game

Purge the undead! Awesome upgradeable guns and armor, unique class skills, and 4 player co-op! Play the most intense zombie shooter on mobile, from the makers of Bloons TD 5.

A virus outbreak on a distant trans-federation planet unleashes horrors from humanity's past. A powerful, rapidly growing zombie horde threatens the very existence of humankind, and the only ones capable of fighting back are the highly skilled, highly weaponized special forces of the SAS.Choose from 3 character classes, maximize the fully customizable skill tree, and select from hundreds of weapons and armor pieces to build the ultimate zombie killing hero. Play dynamic, challenging levels in single player or 4 cooperative multiplayer and give our ravaged civilization its last best hope.

INTENSE ACTION
Zombies swarm the screen, exploding into bits under your hail of bullets. Each of the 17 unique zombie types have special attacks and behavior, and they can evolve - manifesting terrifying new powers as you progress through the game.And just when you think you've beat them all, savage boss zombies hunt you down, puking out acid worms or storming after you in rage mode. Learn their strengths and weaknesses as you lead the action across 7 story-driven maps with varying victory conditions.

UNBEATABLE 4 PLAYER CO-OP
Quickmatch with up to 3 other players of similar level and use the custom skills and weapons chosen by all players to form an effective fire team. Coordinate auto-turret placements, high level room-clearing powers like Assault Team, Aerial Bombardment, and Zombie Antidote, and move physics objects to create temporary cover while you paint the room red.

HEAPS OF EPIC LOOT
Over 160 incredible guns and armor pieces are locked up tight inside increasingly rare strongboxes that you can find in secret rooms or on the mangled remains of your enemies.Your loadout includes a pistol and two rifle class weapons - choose from fast firing submachine guns, devastating shotguns, high damage assault rifles, brutal machine guns, flamethrowers, rocket launchers, lightning guns, and more. Armor up for protection against physical, thermal, and chemical attacks, then round out your arsenal with auto-turrets, grenades, and special high damage ammo to rip through the undead before they rip through you.

AMAZING RPG-STYLE UPGRADES
The Assault, Medic, and Heavy Gunner classes each have unique upgrade trees, giving each character 19 skills to customize. Hundreds of guns and armor pieces have a range of grades and a powerful RED version when you reach high levels. In addition you can add powerful augmentations to your guns and gear which enhance core properties like damage and rate of fire, but can also improve reload time, resist damage, and heal.

Download for free and play SAS: Zombie Assault 4 now!

Please Note: SAS: Zombie Assault 4 is free to download and play (aside from internet, carrier, data, device, and other services for which the player is financially responsible), but some in-game items can be purchased with real money. You can turn off the payment feature by disabling in-app purchases in your device's settings.
SAS: Zombie Assault 4 is recommended for players 12 years of age and older, and the fantasy violence, gibs, and zombie blood are to be expected given the survival theme. We have included a "Gore" setting on the Options screen specifically for young or sensitive players, and this removes the blood and gibs when Gore is toggled Off.
Updated on
13 Dec 2024

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Device or other IDs
This app may collect these data types
Personal info, Financial info and 2 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.4
350K reviews
Cristian Perez
6 July 2025
I've played this game since its inception. lost my data 3 times(high-level characters with black boxes and weapons), rarely gets any updates year-round. I just downloaded it again after some years, many of my petpeves with the game have been solved with a Warmap being added and much more opportunities to level and gain equipment and money. However, the game still lacks customizable HUD, more maps (even legacy maps would be great), and option to play a map round based survival.
72 people found this review helpful
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Keo Storrs
27 April 2025
the game is amazing up until about level 25. around this level, perk prices get higher as well as ammo prices and the zombie difficulty is hugely increased. This made it harder to solo, but no big deal, so I would just make my way to matchmaking. but there's a problem; matchmaking. it puts me with people who are way higher in level or way lower, making the chances of a win extremely low. This change has made progress really slow and has made it really irritating to play.
4 people found this review helpful
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Radiant Shadow
15 May 2025
Gameplay is great, lots of guns and armor to unlock and customize, but it becomes very tedious and boring when you play the same handful of missions over and over. I liked SAS 3 because there were new regions to discover by progressing in the game. This game is like building the foundation for a mansion, then putting a little townhome on top instead. It's good, but it can be so much more.
1 person found this review helpful
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What's new

Minor bug fixes and improvements