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Modeled estimate, not a reported figure. How we estimate →
Prices
Each in the currency that store quoted — not converted: the gap between two rows is the publisher's pricing, not an exchange rate.
Every market we collect.
Discounts
Every price cut of more than 20% we have observed, in each market that quoted one, with this game's chart position on either side of it. These are episodes, not a model: a sale is one event, and one event cannot tell you what the next one will do.
Reviews, worldwide (the counter carries no country): 6.14/day in the week to Aug 22 → 6.29/day in the week after.
About
Genres
Add-ons
Each DLC is estimated with the same model as a game, then summed — a modeled figure, not reported DLC sales.
Updates
Build ids and update times come straight from Steam's PICS — the same source SteamDB reads. Patch history grows as we record new builds.
Engagement
Reviews
Themes across 1077 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
Reviews
мама отпиздилааа и кинула в подвай 100 пауков из 100 стоит своих денег
Я не ту версию купил но всё равно залип. Имба игра
It's le old but also, le good
Media
Related
Related
Price dynamics, follower growth, revenue and sales trajectories with interactive tooltips
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Related
| Game | Estimated lifetime revenue | Reviews | Review score | Price |
|---|---|---|---|---|
| $5.5M | 13.6K | 38% | $19.99 | |
| $5.4M | 5.5K | 87% | $39.99 | |
| $5.5M | 30.2K | 91% | $6.99 | |
| $5.5M | 9.4K | 88% | $19.99 | |
| $5.4M | 4.9K | 83% | $39.99 | |
| $5.4M | 9.2K | 89% | $19.99 |
Related
| Game | Estimated lifetime revenue | Reviews | Review score | Price |
|---|---|---|---|---|
| $1.5K | 18 | 61% | $3.99 | |
| $221 | 1 | 100% | $9.99 | |
| $118.8K | 563 | 89% | $9.99 | |
| $116.2K | 459 | 63% | $11.99 | |
| $61.7K | 195 | 36% | $14.99 | |
| $40.3K | 200 | 82% | $9.99 |
Reviews, worldwide (the counter carries no country): 2739.8/day in the week to Jul 16 → 6.14/day in the week after.
For scale, across Steam · Top Sellers · Poland over the last 30 days: the 21 chart moves that followed a price cut of more than 20% went a median of 12 places towards #1, and the 2,501 moves with no price cut behind them went 1 away. One store, one chart, one country — it is the only place we have enough observations to say even that.
Prices outside the United States have been collected since 6 August 2026 and chart positions since 19 July 2026, so a cut older than that has no market to compare and a market that joined later has no history yet. Nothing here is converted between currencies.
Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: English**languages with full audio support
Hours played at review time, across 1.1K reviews with recorded playtime.
positive critical· bar length = how often the theme comes up
RKFCCYFZ BUHF D HJCCBB
Un clasico, espectacular, el eternal DLC es una basura
原版以撒纯纯随便做出来的游戏，充斥着恶意且完全没打磨好 -匮乏的基础掉落，基本硬币炸弹钥匙都缺 -道具强度弱，且兼容少，比如硫磺火＋三眼都还只扣射速不加激光柱数量 -以上两点导致这基本是纯闯关游戏，没有所谓的运营 -没有显示准确属性、道具效果的功能，且没有蓄力条 -没有mod -变态无解的永恒怪物 -刻意的游戏设计：如恶魔房欠债直接死 -丰富度和后来出的重生以及后续DLC肯定没法比了 -最过分的一点：让许多新手下错了版本 这个版本也就bgm和美术画风比重生版本更有特色了，其他都是要被时代落败的东西
eu achei the binding of isaar rebirth infernal, esse jogo me mostrou oq é sofrimento, acho que foi um dos jogos que mais passei sufoco e dificuldade, mas mesmo assim é muito bom, mas é um inferno puro
Fire!!!
друг подарил эту игру. теперь я как разработчик. меня бьет мама. папа ушел. в меня срут. и плачу как всегда
Ahhh yes, the good, nostalgic isaac built on flash engine- Its a big piece of history that shows the evolution of not only edmund mcmillen's games, but also roguelites in general. Not to mention absolutely gorgeous soundtracks made by Danny Baranosky, with my favourite being "respite". For this price this game is an absolute steal for the amount of content it provides, tho i must admit it has its own flaws. Aside from obvious ones (given the game was released in 2011, damn i feel old) like visibly lower framerate, or tendencies to lag when theres a lot going on screen (especially when unlocking new stuff i get like 5 seconds screen freeze) this game lacks any way of saving a started run, meaning you need to play it from start to finish in one go. Its not really a huge one, but some might find it troubling. The biggest one tho, is that DLC introduces eternal enemis, and HOLY, some rooms are straight up IMPOSSIBLE to clear no hit, which renders the game a bit unfair. Mind you i have 100% the binding of isaac repentence with over 800hours on record. Personally I LOVE hard games, and classic isaac is exactly that. I feel like its meant to be played as as a piece of art- maybe outdated, and flawed in some ways, but its just like youre going to the museum- you go there to objects that are old, often imperfect and even damaged by time, but its exactly what makes them valuable. And i feel the same about flash isaac. Its a piece of old, well preserved art, showing capabilities of small indie dev working on Adobe flash engine in 2010's. If youre casual player, you might better play rebirth and then decide whether you want to see its origins or not- but if you are retro games fan, or simply enjoy learning about history of games- this one, is a great exhibition to study in this massive museum of games that Steam has to offer.
Selling now
See how fast this game is selling right now — estimated copies and revenue per day from recent review growth.
Active players
Estimated daily and monthly active players (DAU/MAU) modeled from peak concurrency.
Players by region
Where this game's players are, estimated from review languages.
Players also reviewed
The games this title's players most often review too — audience affinity.