How many copies has The Binding of Isaac sold?

indielist estimates The Binding of Isaac has sold between 2,056,866 and 4,799,354 units (median 3,428,110), derived from its 48,973 Steam reviews with the white-box Boxleiter v1.0 method. The full breakdown is shown on the page.

Who developed The Binding of Isaac?

The Binding of Isaac was developed by Edmund McMillen and published by Edmund McMillen.

Who published The Binding of Isaac?

The Binding of Isaac was published by Edmund McMillen, developed by Edmund McMillen. See Edmund McMillen's full catalogue and submission status on indielist.

When was The Binding of Isaac released?

The Binding of Isaac was released in 2011.

How many reviews does The Binding of Isaac have on Steam?

The Binding of Isaac has 48,973 Steam reviews, of which 95% are positive.

Is The Binding of Isaac worth playing?

Steam players rate The Binding of Isaac 95% positive across 48,973 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.

The Binding of Isaac

Sep 28, 2011 Action $4.99

Developer Edmund McMillen Publisher Edmund McMillen

Profile updated May 2026

An action-adventure RPG released in 2011, The Binding of Isaac offers roguelike dungeon crawling. It has garnered over 48,628 Steam reviews.

The Binding of Isaac is a 2011 Action game developed by Edmund McMillen and published by Edmund McMillen. On Steam it has gathered 48,973 player reviews, 95% 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 launched at $5. The pairing of developer Edmund McMillen with publisher Edmund McMillen 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 2.1 million to 4.8 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, The Binding of Isaac can be compared against similar Action titles and benchmarked on review counts and estimated sales.

Reviews

48,973

Positive

95%

Steam appid

113200

Engine

Unknown

Players (snapshot)

245

Historical snapshot · 2026-06-07 13:01 UTC

Sales estimate

v1.0

2.1M to 4.8M

units (median: 3.4M)

≈ $5.9M to $13.7M modeled net revenue (fixed store-cut, refund, and regional-price assumptions applied)

2.1M median 4.8M

+ How is this calculated?

48,973 reviews × NB(70) = 3,428,110 median units

Factor	Adjustment
base	+50
year_2011	+30
price_$5	-20
positive_95%	+10
final NB	70

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 The Binding of Isaac at roughly 2.1 million to 4.8 million copies, with a median around 3.4 million, derived from its 48,973 Steam reviews using a multi-factor Boxleiter method (version v1.0). That median maps to approximately $9.8M 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

54 observed days · window low $1.49

Across 54 observed UTC days from 2026-05-31 to 2026-07-24, the daily lowest tracked USD price across stores ranged from $1.49 to $4.99. The tracked-window low was $1.49 on 2026-07-16.

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

Where to buy

Affiliate disclosure

Steam reference

$4.99 Buy
Green Man Gaming

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Fanatical

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Humble Store

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GOG.com

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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

macwindows

Frequently asked questions

How many copies has The Binding of Isaac sold?: indielist estimates The Binding of Isaac has sold between 2,056,866 and 4,799,354 units (median 3,428,110), derived from its 48,973 Steam reviews with the white-box Boxleiter v1.0 method. The full breakdown is shown on the page.
Who developed The Binding of Isaac?: The Binding of Isaac was developed by Edmund McMillen and published by Edmund McMillen.
Who published The Binding of Isaac?: The Binding of Isaac was published by Edmund McMillen, developed by Edmund McMillen. See Edmund McMillen's full catalogue and submission status on indielist.
When was The Binding of Isaac released?: The Binding of Isaac was released in 2011.
How many reviews does The Binding of Isaac have on Steam?: The Binding of Isaac has 48,973 Steam reviews, of which 95% are positive.
Is The Binding of Isaac worth playing?: Steam players rate The Binding of Isaac 95% positive across 48,973 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 The Binding of Isaac can compare it on indielist against semantically similar Action titles such as Risk of Rain (2013), The Binding of Isaac: Rebirth, Nuclear Throne, Rogue Legacy 2, ranked by shared tags and genre rather than by ad spend. On the developer side, Edmund McMillen's other releases and Edmund McMillen's wider catalog are one click away, letting developers benchmark where The Binding of Isaac 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 The Binding of Isaac 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.

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