How many copies has Project Zomboid sold?

indielist estimates Project Zomboid has sold between 18,904,374 and 44,110,206 units (median 31,507,290), derived from its 350,081 Steam reviews with the white-box Boxleiter v1.0 method. The full breakdown is shown on the page.

Who developed Project Zomboid?

Project Zomboid was developed by The Indie Stone and published by The Indie Stone.

Who published Project Zomboid?

Project Zomboid was published by The Indie Stone, developed by The Indie Stone. See The Indie Stone's full catalogue and submission status on indielist.

When was Project Zomboid released?

Project Zomboid was released in 2013.

How many reviews does Project Zomboid have on Steam?

Project Zomboid has 350,081 Steam reviews, of which 94% are positive.

Is Project Zomboid worth playing?

Steam players rate Project Zomboid 94% positive across 350,081 reviews. indielist doesn't score games editorially; it surfaces public review sentiment and a white-box sales estimate so you can judge reception and reach yourself.

Project Zomboid

Nov 8, 2013 Indie $19.99

Developer The Indie Stone Publisher The Indie Stone

Profile updated May 2026

Survival mechanics define this zombie-themed simulation, which first launched in 2013. The title maintains a very positive rating across 147,723 reviews on Steam. It is currently self-published, reflecting a long-term development cycle that has sustained an active player base for over a decade.

Project Zomboid is a 2013 Indie game developed by The Indie Stone and published by The Indie Stone. On Steam it has gathered 350,081 player reviews, 94% of them positive, which counts as a very positive reception among indie titles in the Indie category. The game is available on linux, mac, windows, and launched at $20. The pairing of developer The Indie Stone with publisher The Indie Stone is one of the studio-publisher relationships indielist tracks, letting players find comparable games and letting developers and investors study how Indie projects reach the market. indielist's white-box method estimates its lifetime sales at roughly 18.9 million to 44.1 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, Project Zomboid can be compared against similar Indie titles and benchmarked on review counts and estimated sales.

Reviews

350,081

Positive

94%

Steam appid

108600

Engine

Unknown

Players (snapshot)

20,021

Fresh snapshot · 2026-07-24 11:15 UTC · 24h peak 31,864

Sales estimate

v1.0

18.9M to 44.1M

units (median: 31.5M)

≈ $215.9M to $503.7M modeled net revenue (fixed store-cut, refund, and regional-price assumptions applied)

18.9M median 44.1M

+ How is this calculated?

350,081 reviews × NB(90) = 31,507,290 median units

Factor	Adjustment
base	+50
year_2013	+30
price_$20	0
positive_94%	+10
final NB	90

Heuristic display range: median × [0.6, 1.4]. Boundary protection: NB ∈ [15, 150].

Methodology & limitations

Sales estimates use an additive Boxleiter-derived heuristic against public Steam review counts. They are not authoritative sales data, and the fixed display range is not a statistically validated confidence interval. Actual results may fall outside it, especially for deeply discounted or bundle-heavy titles. Algorithm version v1.0. Read the exact method and validation status.

indielist estimates lifetime unit sales for Project Zomboid at roughly 18.9 million to 44.1 million copies, with a median around 31.5 million, derived from its 350,081 Steam reviews using a multi-factor Boxleiter method (version v1.0). That median maps to approximately $359.8M 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

55 observed days · window low $13.39

Across 55 observed UTC days from 2026-05-15 to 2026-07-24, the daily lowest tracked USD price across stores ranged from $13.39 to $19.99. The tracked-window low was $13.39 on 2026-06-26.

Real store observations · daily lowest tracked USD price across stores · missing days are not filled.

Where to buy

Affiliate disclosure

Steam reference

$19.99 Buy
GOG.com

$19.99 Buy
Green Man Gaming

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Fanatical

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Humble Store

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Latest tracked store observations (2026-07-24 04:53 UTC), cheapest first. Prices may have changed since observation. Some are affiliate links — we may earn a commission at no extra cost to you. Learn more.

Platforms

linuxmacwindows

Frequently asked questions

How many copies has Project Zomboid sold?: indielist estimates Project Zomboid has sold between 18,904,374 and 44,110,206 units (median 31,507,290), derived from its 350,081 Steam reviews with the white-box Boxleiter v1.0 method. The full breakdown is shown on the page.
Who developed Project Zomboid?: Project Zomboid was developed by The Indie Stone and published by The Indie Stone.
Who published Project Zomboid?: Project Zomboid was published by The Indie Stone, developed by The Indie Stone. See The Indie Stone's full catalogue and submission status on indielist.
When was Project Zomboid released?: Project Zomboid was released in 2013.
How many reviews does Project Zomboid have on Steam?: Project Zomboid has 350,081 Steam reviews, of which 94% are positive.
Is Project Zomboid worth playing?: Steam players rate Project Zomboid 94% positive across 350,081 reviews. indielist doesn't score games editorially; it surfaces public review sentiment and a white-box sales estimate so you can judge reception and reach yourself.

Players looking for games like Project Zomboid can compare it on indielist against semantically similar Indie titles such as The Forest, Stranded Deep, Tinkerlands, I Am Future: Cozy Apocalypse Survival, ranked by shared tags and genre rather than by ad spend. On the developer side, The Indie Stone's other releases and The Indie Stone's wider catalog are one click away, letting developers benchmark where Project Zomboid 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 Project Zomboid page serves three audiences at once: players hunting their next Indie 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.

Matched from shared Steam tags and primary genre. Review count breaks ties; it is not a personal recommendation score.