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This free-to-play top-down shooter, released in 2017, pits players against hordes of zombies. Developed and published by Ninja Kiwi, the action title has garnered 9,591 Steam reviews with an 86% positive rating. Players can team up in multiplayer to survive the zombie apocalypse.
Overview
SAS: Zombie Assault 4 is a 2017 Action game developed by Ninja Kiwi and published by Ninja Kiwi. On Steam it has gathered 9,596 player reviews, 86% of them positive, which counts as a very positive reception among indie titles in the Action category. The game is available on mac, windows, and is free to play. The pairing of developer Ninja Kiwi with publisher Ninja Kiwi is one of the studio-publisher relationships indielist tracks, letting players find comparable games and letting developers and investors study how Action projects reach the market. indielist's white-box method estimates its lifetime sales at roughly 518,000 to 1.2 million units, with the full Boxleiter factor breakdown shown on this page rather than a single black-box figure. Within indielist's catalog of indie games mapped to their studios, publishers, and funding, SAS: Zombie Assault 4 can be compared against similar Action titles and benchmarked on review counts and estimated sales.
Reviews
9,596
Positive
86%
Steam appid
678800
Engine
Unknown
Sales estimate
vv1.0518K to 1.2M
units (median: 864K)
≈ $4.4M to $10.4M net revenue (Steam cut + refunds + regional discount applied)
+ - How is this calculated?
| Factor | Adjustment |
|---|---|
| base | +50 |
| year_2017 | +30 |
| price_$15 | 0 |
| positive_86% | +10 |
| final NB | 90 |
Confidence range: median × [0.6, 1.4]. Boundary protection: NB ∈ [15, 150].
Methodology & limitations
Sales estimates use a multi-factor Boxleiter method against public Steam review counts.
They are not authoritative sales data. Actual sales can deviate by
±50% in either direction. Free-to-play games, deeply discounted titles, and games
with heavy bundle distribution have larger error margins. Algorithm version
v1.0.
indielist estimates lifetime unit sales for SAS: Zombie Assault 4 at roughly 518,000 to 1.2 million copies, with a median around 864,000, derived from its 9,596 Steam reviews using a multi-factor Boxleiter method (version v1.0). That median maps to approximately $7.4M in net revenue after Steam's 30% cut, regional pricing, and refunds. Unlike black-box trackers, the full calculation is shown on this page: a base review-to-sales multiplier is adjusted for release year, launch price, review sentiment, studio size, and genre, and every adjustment is listed so developers, publishers, and investors can audit exactly how the figure was reached. The range itself reflects genuine uncertainty — review-to-sales ratios vary widely between games — so indielist publishes a low, median, and high band rather than a false-precision single number, and treats free-to-play, heavily discounted, and bundle-distributed titles as having wider error margins still.
Price history
90d · low $10.55Over the last 90 days the price ranged from $10.55 to $19.99, averaging $18.89 across 3 discount windows, with a historical low of $10.55 on 2026-04-14.
Synthetic series for demo. Real ITAD price history loads after Day 3 ingest.
Platforms
macwindows
Frequently asked questions
- How many copies has SAS: Zombie Assault 4 sold?
- indielist estimates SAS: Zombie Assault 4 has sold between 518,184 and 1,209,096 units (median 863,640), derived from its 9,596 Steam reviews with the white-box Boxleiter vv1.0 method. The full breakdown is shown on the page.
- Who developed SAS: Zombie Assault 4?
- SAS: Zombie Assault 4 was developed by Ninja Kiwi and published by Ninja Kiwi.
- When was SAS: Zombie Assault 4 released?
- SAS: Zombie Assault 4 was released in 2017.
- How many reviews does SAS: Zombie Assault 4 have on Steam?
- SAS: Zombie Assault 4 has 9,596 Steam reviews, of which 86% are positive.
Ecosystem
indielist positions SAS: Zombie Assault 4 within the Action segment so players can surface comparable titles by shared tags and genre rather than by storefront promotion. On the developer side, Ninja Kiwi's other releases and Ninja Kiwi's wider catalog are one click away, letting developers benchmark where SAS: Zombie Assault 4 sits among a studio's body of work and how its publisher's portfolio performs. Because indielist maps studios, publishers, games, and funding into one connected graph, the same SAS: Zombie Assault 4 page serves three audiences at once: players hunting their next Action game, developers studying how comparable projects were positioned and what they sold, and investors tracing which teams and labels are active in the space. A machine-readable markdown mirror of this page is published at the same path with a .md suffix for AI assistants, and its review, price, and sales-estimate figures are refreshed on a schedule rather than frozen at launch.