The Game Census
The Binding of Isaac cover art

The Binding of Isaac

Edmund McMillen · 2011-09-28

Steam

ActionAdventureIndieRPG

Modes: Single player

Releases: Sep 28, 2011 (PC (Microsoft Windows)), Sep 28, 2011 (Mac)

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196
playing now
95%
positive of 63k reviews
Very Positive
steam rating
1,000,000–2,000,000
owners (SteamSpy est.)
6,057
twitch viewers (latest)
84/100
critic score (2 outlets, IGDB)
79/100
IGDB user rating (431 ratings)
167h
to beat · rushed 9h · completionist 117h
gold
deck/linux tier (ProtonDB)
$4.99
steam price (US)

196 players in-game as of 2026-08-30 01:00 UTC (census sample)

The Binding of Isaac is a 2011 roguelike action-adventure game designed by independent developers Edmund McMillen and Florian Himsl. It was initially released for Microsoft Windows, then ported to OS X and Linux. The game's title and plot are inspired by the Biblical story of the Binding of Isaac. In the game, Isaac's mother receives a message from God demanding the life of her son as proof of her faith, and Isaac, fearing for his life, flees into the monster-filled basement of their home where he must fight to survive. Players control Isaac or one of the 6 other unlockable characters through a procedurally generated dungeon in a roguelike manner, fashioned after those of The Legend of Zelda, defeating monsters in real-time combat while collecting items and power-ups to defeat bosses and eventually Isaac's mother.

Trailer

The Binding of Isaac trailer thumbnail

The Binding of Isaac: Trailer

≈1,000,000 YouTube results for this game's trailer search

Health check

Healthy
  • · 196 players in-game at the last census sample.
  • · 1,748 reviews in the last 8 weeks (~219/week).
  • · Review velocity up 4% vs the prior 8 weeks.
  • · Top 3% of 10,791 Action games in the census by review count.

Health tier since 2026-08-30

Estimated sales: 2.5M–5.0M copies

Review-multiple estimate from 62,838 total reviews — how this is computed.

Current store prices

lowest across shops (ITAD)$4.99

Deal snapshots via CheapShark, refreshed daily.

All-time low: $0.49 at Steam (2014-11-29) · bundled 2×via IsThereAnyDeal

12-month high $4.99 · on sale 15 of 27 observed days · $4.50 above the all-time low (census price snapshots)

Review momentum

PositiveNegative
64564520182026Week of 2018-01-01: 205 positiveWeek of 2018-01-01: 12 negativeWeek of 2018-02-01: 126 positiveWeek of 2018-02-01: 7 negativeWeek of 2018-03-01: 109 positiveWeek of 2018-03-01: 15 negativeWeek of 2018-04-01: 99 positiveWeek of 2018-04-01: 19 negativeWeek of 2018-05-01: 147 positiveWeek of 2018-05-01: 14 negativeWeek of 2018-06-01: 111 positiveWeek of 2018-06-01: 14 negativeWeek of 2018-07-01: 98 positiveWeek of 2018-07-01: 14 negativeWeek of 2018-08-01: 61 positiveWeek of 2018-08-01: 10 negativeWeek of 2018-09-01: 63 positiveWeek of 2018-09-01: 7 negativeWeek of 2018-10-01: 64 positiveWeek of 2018-10-01: 2 negativeWeek of 2018-11-01: 367 positiveWeek of 2018-11-01: 10 negativeWeek of 2018-12-01: 62 positiveWeek of 2018-12-01: 9 negativeWeek of 2019-01-01: 85 positiveWeek of 2019-01-01: 13 negativeWeek of 2019-02-01: 81 positiveWeek of 2019-02-01: 14 negativeWeek of 2019-03-01: 77 positiveWeek of 2019-03-01: 11 negativeWeek of 2019-04-01: 68 positiveWeek of 2019-04-01: 5 negativeWeek of 2019-05-01: 83 positiveWeek of 2019-05-01: 10 negativeWeek of 2019-06-01: 341 positiveWeek of 2019-06-01: 7 negativeWeek of 2019-07-01: 284 positiveWeek of 2019-07-01: 11 negativeWeek of 2019-08-01: 58 positiveWeek of 2019-08-01: 4 negativeWeek of 2019-09-01: 57 positiveWeek of 2019-09-01: 7 negativeWeek of 2019-10-01: 80 positiveWeek of 2019-10-01: 7 negativeWeek of 2019-11-01: 379 positiveWeek of 2019-11-01: 16 negativeWeek of 2019-12-01: 256 positiveWeek of 2019-12-01: 13 negativeWeek of 2020-01-01: 203 positiveWeek of 2020-01-01: 17 negativeWeek of 2020-02-01: 185 positiveWeek of 2020-02-01: 12 negativeWeek of 2020-03-01: 254 positiveWeek of 2020-03-01: 12 negativeWeek of 2020-04-01: 261 positiveWeek of 2020-04-01: 23 negativeWeek of 2020-05-01: 207 positiveWeek of 2020-05-01: 8 negativeWeek of 2020-06-01: 193 positiveWeek of 2020-06-01: 12 negativeWeek of 2020-07-01: 190 positiveWeek of 2020-07-01: 13 negativeWeek of 2020-08-01: 156 positiveWeek of 2020-08-01: 18 negativeWeek of 2020-09-01: 162 positiveWeek of 2020-09-01: 9 negativeWeek of 2020-10-01: 188 positiveWeek of 2020-10-01: 9 negativeWeek of 2020-11-01: 236 positiveWeek of 2020-11-01: 12 negativeWeek of 2020-12-01: 192 positiveWeek of 2020-12-01: 13 negativeWeek of 2021-01-01: 482 positiveWeek of 2021-01-01: 31 negativeWeek of 2021-02-01: 402 positiveWeek of 2021-02-01: 26 negativeWeek of 2021-03-01: 274 positiveWeek of 2021-03-01: 15 negativeWeek of 2021-04-01: 335 positiveWeek of 2021-04-01: 27 negativeWeek of 2021-05-01: 288 positiveWeek of 2021-05-01: 21 negativeWeek of 2021-06-01: 239 positiveWeek of 2021-06-01: 10 negativeWeek of 2021-07-01: 211 positiveWeek of 2021-07-01: 16 negativeWeek of 2021-08-01: 175 positiveWeek of 2021-08-01: 11 negativeWeek of 2021-09-01: 148 positiveWeek of 2021-09-01: 12 negativeWeek of 2021-10-01: 187 positiveWeek of 2021-10-01: 10 negativeWeek of 2021-11-01: 645 positiveWeek of 2021-11-01: 43 negativeWeek of 2021-12-01: 566 positiveWeek of 2021-12-01: 56 negativeWeek of 2022-01-01: 496 positiveWeek of 2022-01-01: 33 negativeWeek of 2022-02-01: 217 positiveWeek of 2022-02-01: 20 negativeWeek of 2022-03-01: 334 positiveWeek of 2022-03-01: 21 negativeWeek of 2022-04-01: 230 positiveWeek of 2022-04-01: 24 negativeWeek of 2022-05-01: 207 positiveWeek of 2022-05-01: 14 negativeWeek of 2022-06-01: 190 positiveWeek of 2022-06-01: 24 negativeWeek of 2022-07-01: 195 positiveWeek of 2022-07-01: 21 negativeWeek of 2022-08-01: 154 positiveWeek of 2022-08-01: 16 negativeWeek of 2022-09-01: 137 positiveWeek of 2022-09-01: 14 negativeWeek of 2022-10-01: 151 positiveWeek of 2022-10-01: 17 negativeWeek of 2022-11-01: 247 positiveWeek of 2022-11-01: 8 negativeWeek of 2022-12-01: 142 positiveWeek of 2022-12-01: 14 negativeWeek of 2023-01-01: 163 positiveWeek of 2023-01-01: 19 negativeWeek of 2023-02-01: 142 positiveWeek of 2023-02-01: 11 negativeWeek of 2023-03-01: 170 positiveWeek of 2023-03-01: 9 negativeWeek of 2023-04-01: 157 positiveWeek of 2023-04-01: 13 negativeWeek of 2023-05-01: 142 positiveWeek of 2023-05-01: 16 negativeWeek of 2023-06-01: 206 positiveWeek of 2023-06-01: 21 negativeWeek of 2023-07-01: 278 positiveWeek of 2023-07-01: 29 negativeWeek of 2023-08-01: 219 positiveWeek of 2023-08-01: 23 negativeWeek of 2023-09-01: 229 positiveWeek of 2023-09-01: 16 negativeWeek of 2023-10-01: 230 positiveWeek of 2023-10-01: 24 negativeWeek of 2023-11-01: 312 positiveWeek of 2023-11-01: 16 negativeWeek of 2023-12-01: 229 positiveWeek of 2023-12-01: 34 negativeWeek of 2024-01-01: 282 positiveWeek of 2024-01-01: 37 negativeWeek of 2024-02-01: 193 positiveWeek of 2024-02-01: 24 negativeWeek of 2024-03-01: 250 positiveWeek of 2024-03-01: 20 negativeWeek of 2024-04-01: 215 positiveWeek of 2024-04-01: 17 negativeWeek of 2024-05-01: 156 positiveWeek of 2024-05-01: 17 negativeWeek of 2024-06-01: 196 positiveWeek of 2024-06-01: 17 negativeWeek of 2024-07-01: 240 positiveWeek of 2024-07-01: 26 negativeWeek of 2024-08-01: 187 positiveWeek of 2024-08-01: 16 negativeWeek of 2024-09-01: 181 positiveWeek of 2024-09-01: 27 negativeWeek of 2024-10-01: 160 positiveWeek of 2024-10-01: 20 negativeWeek of 2024-11-01: 173 positiveWeek of 2024-11-01: 26 negativeWeek of 2024-12-01: 264 positiveWeek of 2024-12-01: 29 negativeWeek of 2025-01-01: 217 positiveWeek of 2025-01-01: 27 negativeWeek of 2025-02-01: 165 positiveWeek of 2025-02-01: 26 negativeWeek of 2025-03-01: 187 positiveWeek of 2025-03-01: 28 negativeWeek of 2025-04-01: 161 positiveWeek of 2025-04-01: 18 negativeWeek of 2025-05-01: 212 positiveWeek of 2025-05-01: 28 negativeWeek of 2025-06-01: 201 positiveWeek of 2025-06-01: 25 negativeWeek of 2025-07-01: 199 positiveWeek of 2025-07-01: 21 negativeWeek of 2025-08-01: 160 positiveWeek of 2025-08-01: 21 negativeWeek of 2025-09-01: 137 positiveWeek of 2025-09-01: 20 negativeWeek of 2025-10-01: 232 positiveWeek of 2025-10-01: 26 negativeWeek of 2025-11-01: 200 positiveWeek of 2025-11-01: 18 negativeWeek of 2025-12-01: 212 positiveWeek of 2025-12-01: 22 negativeWeek of 2026-01-01: 203 positiveWeek of 2026-01-01: 25 negativeWeek of 2026-02-01: 177 positiveWeek of 2026-02-01: 26 negativeWeek of 2026-03-01: 184 positiveWeek of 2026-03-01: 19 negativeWeek of 2026-04-01: 182 positiveWeek of 2026-04-01: 18 negativeWeek of 2026-05-01: 197 positiveWeek of 2026-05-01: 21 negativeWeek of 2026-06-01: 175 positiveWeek of 2026-06-01: 36 negativeWeek of 2026-07-01: 208 positiveWeek of 2026-07-01: 43 negativeWeek of 2026-08-01: 179 positiveWeek of 2026-08-01: 25 negative
Weekly review counts (Steam review histogram). Positive above the line, negative below.

Players online

2961292026-08-06 21:00 — 238 players2026-08-07 05:00 — 148 players2026-08-07 13:00 — 225 players2026-08-07 21:00 — 269 players2026-08-08 05:00 — 129 players2026-08-08 13:00 — 214 players2026-08-08 21:00 — 235 players2026-08-09 05:00 — 172 players2026-08-09 13:00 — 244 players2026-08-09 21:00 — 253 players2026-08-10 05:00 — 159 players2026-08-10 13:00 — 233 players2026-08-10 21:00 — 222 players2026-08-11 05:00 — 145 players2026-08-11 13:00 — 247 players2026-08-12 21:00 — 219 players2026-08-14 05:00 — 137 players2026-08-15 12:00 — 218 players2026-08-16 20:00 — 263 players2026-08-18 04:00 — 162 players2026-08-19 11:00 — 197 players2026-08-20 19:00 — 274 players2026-08-22 02:00 — 183 players2026-08-23 10:00 — 202 players2026-08-24 18:00 — 269 players2026-08-26 02:00 — 195 players2026-08-27 10:00 — 170 players2026-08-28 17:00 — 250 players2026-08-30 01:00 — 196 players
Concurrent players, hourly average, last 30 days (census samples).

Price history

$9.99$0.492015-01-012026-08-282015-01-01 — best price $0.492015-01-30 — best price $4.992015-06-01 — best price $4.992015-08-03 — best price $4.992015-12-01 — best price $4.992016-07-04 — best price $4.992016-10-14 — best price $1.242017-05-04 — best price $1.502017-12-18 — best price $1.252018-06-08 — best price $4.992018-12-17 — best price $1.252019-06-13 — best price $1.252019-11-25 — best price $0.952020-04-02 — best price $0.752020-07-13 — best price $4.992020-11-06 — best price $4.992021-02-05 — best price $4.992021-06-21 — best price $4.992021-10-11 — best price $4.992022-03-24 — best price $4.992023-06-26 — best price $4.992023-10-30 — best price $4.992024-01-22 — best price $4.992024-06-15 — best price $4.992024-10-14 — best price $4.992025-03-05 — best price $2.992025-06-24 — best price $2.492025-10-06 — best price $4.992026-01-19 — best price $4.992026-06-08 — best price $1.742026-08-28 — best price $4.99
Lowest recorded price across tracked stores, per day (census snapshots).

Attention

14k4562026-06-01 — 838 pageviews2026-06-04 — 574 pageviews2026-06-07 — 495 pageviews2026-06-10 — 569 pageviews2026-06-13 — 502 pageviews2026-06-16 — 490 pageviews2026-06-19 — 489 pageviews2026-06-22 — 531 pageviews2026-06-25 — 1,243 pageviews2026-06-28 — 2,032 pageviews2026-07-01 — 1,517 pageviews2026-07-04 — 1,407 pageviews2026-07-07 — 1,386 pageviews2026-07-10 — 1,035 pageviews2026-07-13 — 974 pageviews2026-07-16 — 865 pageviews2026-07-19 — 973 pageviews2026-07-22 — 754 pageviews2026-07-25 — 827 pageviews2026-07-28 — 922 pageviews2026-07-31 — 964 pageviews2026-08-03 — 778 pageviews2026-08-06 — 746 pageviews2026-08-09 — 14,259 pageviews2026-08-12 — 991 pageviews2026-08-15 — 846 pageviews2026-08-18 — 762 pageviews2026-08-21 — 906 pageviews2026-08-24 — 924 pageviews2026-08-27 — 842 pageviews2026-08-29 — 1,007 pageviews
Daily Wikipedia pageviews (attention proxy, census-recorded).

Completion

60+
achievements tracked
67.7%
earned "The Radioactive Spider"
15.9%
median achievement earned by

Global achievement rates from Steam.

Details

WindowsmacOSSingle-playerSteam AchievementsSteam Trading CardsFamily Sharing1 DLC

Console footprint

PlatformPlayers trackedCompletionTrophies/achievements
Steam (Steam)99,1873%99

Players tracked by Exophase (achievement/trophy trackers) — a sample of the player base, not total sales.

Where its players are

Share of Steam reviews by language (top languages measured) — a proxy for where the player base lives.

Player tags

2DDarkIndieActionTop-DownAddictiveAdventureDifficultRogue-likeRogue-lite

Census log

Computed from census-recorded observations only — dates are observation dates.

Players also track

BioShock® 2Wolfenstein: The New OrderDishonoredBrothers - A Tale of Two SonsMurdered: Soul SuspectThe Cat LadyThe Vanishing of Ethan CarterDeus Ex: Mankind Divided

Similarity via IGDB.

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