How many copies has DEFCON sold?

indielist estimates DEFCON has sold between 168,336 and 392,784 units (median 280,560), derived from its 3,507 Steam reviews with the white-box Boxleiter v1.0 method. The full breakdown is shown on the page.

Who published DEFCON?

DEFCON was published by Introversion Software, developed by Introversion Software. See Introversion Software's full catalogue and submission status on indielist.

How many reviews does DEFCON have on Steam?

DEFCON has 3,507 Steam reviews.

DEFCON

Sep 29, 2006 Indie $11.99

Developer Introversion Software Publisher Introversion Software

Profile updated Oct 2026

In the indie game category, DEFCON dates to 2006 and was developed and published by Introversion Software. Its Steam listing has 3,507 reviews, and its initial price was $11.99; the engine is unspecified.

DEFCON is a 2006 Indie game developed by Introversion Software and published by Introversion Software. On Steam it has gathered 3,507 player reviews to date. The game is available on linux, mac, windows, and launched at $12. The pairing of developer Introversion Software with publisher Introversion Software 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 168,000 to 393,000 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, DEFCON can be compared against similar Indie titles and benchmarked on review counts and estimated sales.

Reviews

3,507

Positive

Unknown

Steam appid

1520

Engine

Unknown

Players (snapshot)

Unavailable

Sales estimate

v1.0

168K to 393K

units (median: 281K)

≈ $1.2M to $2.7M modeled net revenue (fixed store-cut, refund, and regional-price assumptions applied)

168K median 393K

+ How is this calculated?

3,507 reviews × NB(80) = 280,560 median units

Factor	Adjustment
base	+50
year_2006	+30
price_$12	0
positive_80%	0
final NB	80

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 DEFCON at roughly 168,000 to 393,000 copies, with a median around 281,000, derived from its 3,507 Steam reviews using a multi-factor Boxleiter method (version v1.0). That median maps to approximately $1.9M 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

No tracked store price observations are available for this game in the last 90 days.

Where to buy

Affiliate disclosure

Steam reference

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Green Man Gaming

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Fanatical

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Humble Store

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GOG.com

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No tracked store price observation is available yet; links go straight to each store. Some are affiliate links — we may earn a commission at no extra cost to you. Learn more.

Platforms

linuxmacwindows

Genres

IndieStrategy

Frequently asked questions

How many copies has DEFCON sold?: indielist estimates DEFCON has sold between 168,336 and 392,784 units (median 280,560), derived from its 3,507 Steam reviews with the white-box Boxleiter v1.0 method. The full breakdown is shown on the page.
Who developed DEFCON?: DEFCON was developed by Introversion Software and published by Introversion Software.
Who published DEFCON?: DEFCON was published by Introversion Software, developed by Introversion Software. See Introversion Software's full catalogue and submission status on indielist.
When was DEFCON released?: DEFCON was released in 2006.
How many reviews does DEFCON have on Steam?: DEFCON has 3,507 Steam reviews.

Players looking for games like DEFCON can compare it on indielist against semantically similar Indie titles such as Stardew Valley, Euro Truck Simulator 2, Project Zomboid, Undertale, ranked by shared tags and genre rather than by ad spend. On the developer side, Introversion Software's other releases and Introversion Software's wider catalog are one click away, letting developers benchmark where DEFCON 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 DEFCON 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.