How many copies has Iron Lung sold?

indielist estimates Iron Lung has sold between 390,663 and 911,547 units (median 651,105), derived from its 10,017 Steam reviews with the white-box Boxleiter v1.0 method. The full breakdown is shown on the page.

Who published Iron Lung?

Iron Lung was published by David Szymanski, developed by David Szymanski. See David Szymanski's full catalogue and submission status on indielist.

When was Iron Lung released?

Iron Lung was released in 2022.

How many reviews does Iron Lung have on Steam?

Iron Lung has 10,017 Steam reviews, of which 92% are positive.

Is Iron Lung worth playing?

Steam players rate Iron Lung 92% positive across 10,017 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.

Iron Lung

Mar 9, 2022 Adventure $7.99

Developer David Szymanski Publisher David Szymanski

Profile updated Jun 2026

This 2022 adventure game puts players in a claustrophobic submarine exploring a blood ocean. With 9,766 Steam reviews at 92% positive, it demonstrates strong player reception. David Szymanski self-published this title.

Iron Lung is a 2022 Adventure game developed by David Szymanski and published by David Szymanski. On Steam it has gathered 10,017 player reviews, 92% of them positive, which counts as a very positive reception among indie titles in the Adventure category. The game is available on windows, and launched at $8. The pairing of developer David Szymanski with publisher David Szymanski is one of the studio-publisher relationships indielist tracks, letting players find comparable games and letting developers and investors study how Adventure projects reach the market. indielist's white-box method estimates its lifetime sales at roughly 391,000 to 912,000 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, Iron Lung can be compared against similar Adventure titles and benchmarked on review counts and estimated sales.

Reviews

10,017

Positive

92%

Steam appid

1846170

Engine

Unknown

Players (snapshot)

Unavailable

Sales estimate

v1.0

391K to 912K

units (median: 651K)

≈ $1.8M to $4.2M modeled net revenue (fixed store-cut, refund, and regional-price assumptions applied)

391K median 912K

+ How is this calculated?

10,017 reviews × NB(65) = 651,105 median units

Factor	Adjustment
base	+50
year_2022	0
price_$8	-5
positive_92%	+10
genre_Adventure	+10
final NB	65

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 Iron Lung at roughly 391,000 to 912,000 copies, with a median around 651,000, derived from its 10,017 Steam reviews using a multi-factor Boxleiter method (version v1.0). That median maps to approximately $3.0M 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

53 observed days · window low $3.99

Across 53 observed UTC days from 2026-06-01 to 2026-07-24, the daily lowest tracked USD price across stores ranged from $3.99 to $7.99. The tracked-window low was $3.99 on 2026-06-18.

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

Where to buy

Affiliate disclosure

GOG.com -50%

$3.99 Buy
Steam reference

$7.99 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 04:48 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

windows

Frequently asked questions

How many copies has Iron Lung sold?: indielist estimates Iron Lung has sold between 390,663 and 911,547 units (median 651,105), derived from its 10,017 Steam reviews with the white-box Boxleiter v1.0 method. The full breakdown is shown on the page.
Who developed Iron Lung?: Iron Lung was developed by David Szymanski and published by David Szymanski.
Who published Iron Lung?: Iron Lung was published by David Szymanski, developed by David Szymanski. See David Szymanski's full catalogue and submission status on indielist.
When was Iron Lung released?: Iron Lung was released in 2022.
How many reviews does Iron Lung have on Steam?: Iron Lung has 10,017 Steam reviews, of which 92% are positive.
Is Iron Lung worth playing?: Steam players rate Iron Lung 92% positive across 10,017 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 Iron Lung can compare it on indielist against semantically similar Adventure titles such as What Remains of Edith Finch, Mouthwashing, The Beginner's Guide, The Room Three, ranked by shared tags and genre rather than by ad spend. On the developer side, David Szymanski's other releases and David Szymanski's wider catalog are one click away, letting developers benchmark where Iron Lung 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 Iron Lung page serves three audiences at once: players hunting their next Adventure 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.