SAS: Zombie Assault 4

store.steampowered.comStore page, read 28 October 2026

Backs Online co-op, Most players online, Crossplay, Free base co-op, Confirmed free setups, Platforms, Kind of game, Sessions, About, Fighting, Unlocks and progress, Planning ahead, Tension and danger, Fear, Exploring, Story, Working in sync.

• Online co-op: Key features list Online Co-op. The text offers single player or 4 player co-op.
• Most players online: The text says 4 player co-op and a quick match with up to 3 other players.
• Crossplay: Key features list Cross-Platform Multiplayer.
• Free base co-op: The page has a Play Game button and no price. User tags include Free to Play, and the features also list In-App Purchases.
• Confirmed free setups: Co-op missions are the main way to play and the page shows no price. A quick match joins you with up to 3 other players, so the public capacity is 4. No page lists supported private group sizes, so none are given.
• Platforms: Lists system requirements for Windows and macOS.
• Kind of game: The text gives three classes, loadouts chosen by every player and a fire team of up to four.
• Sessions: The text describes 7 maps with different victory conditions and strongbox loot that you chase across missions.
• About: The text sets a virus outbreak on a distant planet and lists 17 zombie types. User tags include Zombies and Sci-fi.
• Fighting: The text has zombies swarming the screen. User tags include Top-Down Shooter, Shooter and Twin Stick Shooter.
• Unlocks and progress: The text lists over 160 guns and armor pieces and 19 skills per class.
• Planning ahead: The text lists loadouts, armor against three kinds of damage, auto-turrets and class powers.
• Tension and danger: User tags include Survival and Horror, and the text has boss zombies that hunt you down in rage mode.
• Fear: User tags include Horror and Gore, but the view is top-down and the text leads with action, not dread. Kept at 1.
• Exploring: The text says strongboxes can be found in secret rooms.
• Story: The text calls the 7 maps story-driven and opens with a virus outbreak. Play still comes first.
• Working in sync: The text asks players to coordinate turrets and powers. A 2014 review says there is no way to talk with teammates, and quick matches pair strangers. Rated 1.

store.steampowered.comStore data, read 28 October 2026

Backs Steam app ID, Online co-op, Crossplay, Free base co-op, Release status, Platforms, Genres, Rivalry in the group.

• Steam app ID: The returned app identity is 678800.
• Online co-op: The short description says the whole game can be played alone or in 4 player online co-op.
• Crossplay: Categories include Cross-Platform Multiplayer.
• Free base co-op: is_free is true and there is no price. Categories include In-App Purchases.
• Release status: Steam lists the game as released, with no Early Access label.
• Platforms: Backs windows and macos. Steam lists no Linux build.
• Genres: Steam lists Action and RPG, and the short description calls it an action-shooter with RPG elements.
• Rivalry in the group: The short description mentions PvP events such as Last Man Standing, and categories list Online PvP and Steam Leaderboards. These are side modes.

store.steampowered.comStore data, read 28 October 2026

Backs Steam Deck.

• Steam Deck: Valve rates the game Verified on Steam Deck.

ninjakiwi.comOfficial site, read 28 October 2026

Backs Online co-op, Most players online, Platforms.

• Online co-op: The maker's page offers single player or 4 player cooperative multiplayer.
• Most players online: The page says 4 player co-op.
• Platforms: The page offers the game on the App Store, Google Play and Steam.

steamcommunity.comOfficial support page, read 28 October 2026

Backs Crossplay, Free base co-op, Confirmed free setups.

• Crossplay: The developer FAQ of 2017-10-16 says Steam players can make a private match and send an invite code to friends who play on mobile. It names mobile, not iOS or Android, so no platform list is given.
• Free base co-op: The same FAQ says the game costs nothing, has no forced ads and sells in-app purchases through the Steam wallet. Google Play still lists ads.
• Confirmed free setups: The FAQ covers the Steam edition and mentions private matches without a group size.

apps.apple.comStore page, read 28 October 2026

Backs Platforms, Free base co-op, Confirmed free setups, Crossplay.

• Platforms: The iPhone and iPad edition. The listing advertises 4 player co-op with quick match, free with in-app purchases. It does not mention playing on one device.
• Free base co-op: The listing shows Free with In-App Purchases.
• Confirmed free setups: The listing offers the same 4 player co-op in a free download.
• Crossplay: The listing says private matches are still in development, which disagrees with the maker's Steam FAQ. The FAQ is the only maker statement about playing with mobile friends, so it is used and the conflict is noted.

play.google.comStore page, read 28 October 2026

Backs Platforms, Free base co-op, Confirmed free setups.

• Platforms: The Android edition. The listing advertises 4 player co-op with quick match, free to install with ads and in-app purchases. It does not mention playing on one device.
• Free base co-op: The listing says the game is free to download and play, with some items sold for real money.
• Confirmed free setups: The listing offers the same 4 player co-op in a free install.

itunes.apple.comStore data, read 28 October 2026

Backs Release date.

• Release date: Apple lists the iOS release as 2014-10-23. Steam and Wikidata give 2017-10-16 for the later Steam release. The maker FAQ says the Steam version is based on mobile, so the first platform's date is used. The App Store version history shows an earlier 1.0 timestamp of 2014-10-22, which is not used.

adweek.comPress, read 28 October 2026

Backs Release date.

• Release date: Adweek, 2014-10-23, reports the maker's launch on iOS and Android, which matches Apple's date.

wikidata.orgWikidata, read 28 October 2026

Backs Wikidata item, Genres.

• Wikidata item: The item is SAS: Zombie Assault 4 and lists Steam app id 678800.
• Genres: P136 is action game and role-playing video game.

store.steampowered.comOfficial news, read 28 October 2026

Backs Release status.

• Release status: The maker's Steam news of 2026-10-02 announces a new global event in the game, so it is still live.

148apps.comPress, read 28 October 2026

Backs Fighting, Unlocks and progress, Sessions, Crossplay.

• Fighting: Review from 2014-10-30 calls it a twin-stick shooter against hordes of zombies.
• Unlocks and progress: Says loot from strongboxes and upgrades are the main hook.
• Sessions: Says each level splits into objectives and waves of attack.
• Crossplay: Review from 2014 says there was then no way to set up a private match with friends. The maker's 2017 FAQ describes private matches, so this is old.

iphones.ruPress, read 28 October 2026

Backs Kind of game, Tension and danger, Working in sync, Story, Getting better, Unlocks and progress.

• Kind of game: Russian review from 2014-10-25 says up to four players fight side by side and do the missions together.
• Tension and danger: Says zombies often attack from behind and when you expect them least, and rates the difficulty 4 out of 5.
• Working in sync: Says the missing way to talk with partners makes teamwork harder.
• Story: Says the story is a short backstory and a mission briefing.
• Getting better: Rates the controls 5 out of 5 and describes simple twin-stick controls.
• Unlocks and progress: Says gear and skills get a lot of attention and beat many mobile RPGs.