
BUILD CIRCUITS. WRITE CODE. RTFM.
Modeled estimate, not a reported figure. How we estimate →
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): 1.43/day in the week to Sep 10 → 1.57/day in the week after.
For scale, across Steam · Top Sellers · Brazil over the last 30 days: the 25 chart moves that followed a price cut of more than 20% went a median of 10 places towards #1, and the 2,413 moves with no price cut behind them went 2 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.
About

Genres
Sums Steam only; Xbox, GOG publish no volume signal, so the true total is higher by an unknown amount.
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 80 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
Reviews
game is so good that it makes me me want to go to a province, away from electronics and society, plant a tree, build a farm, take care of animals, start a family and drink a coffee on a peaceful warm place
TL;DR: 7.5 / 10 Unless you're super into (a) old-school circuit hardware programming or (b) Guangdong city names, this is not the game to start your Zachtronics journey. If you've already gleefully set out on that journey of engineering optimization, Shenzhen I/O is a worthy trail to follow. There's no logical justification for my complaints about the work-like nature of Papers, Please but celebration of Shenzhen I/O, considering it's the workiest Zachtronics game yet. It lacks the fun visuals and implicit programming of SpaceChem/Infinifactory or the weird directional coding of TIS-80. I mean, the game strongly encourages you to build an IRL binder with dozens of realistic component datasheets, for fork's sake. But crucially, if it's work, it's the exact sort of work I cherish doing. Plus, unlike real work, there's no corporate red tape or impending deadlines. Just interesting problems to solve, and a frustratingly limited (ergo rewarding) toolset with which to solve them. As is the Zachtronics way, even though the game could get by on the strength of the puzzles, the corporate plot and characters layered around them pull me in closer. Nothing extraordinary, but the exaggerated personalities are funny, believable, and relatable. I imagine anyone who's worked in tech [read: the only people who might play this game] will see their colleagues in the caricatures. I found myself chuckling far more than I do with games that make comedy a priority. At least until the *SPOILER ALERT* second act, where all the fun personalities disappear. For many, that dwindling fun will be compounded by a colossal jump in difficulty in an already challenging game. Players who weren't accumulating design patterns, hacks, and ways to cheese the easy levels into using fewer components and less code will find themselves entirely unprepared for the space limitations. For me, four of the last ten puzzles are among the hardest I've encountered in a Zachtronics endeavor, maybe even the hardest I've ever come across in the mainline of a video game. It's easy to see why less than 1% of players finish the whole campaign, and I suspect that tiny fraction is propped up by achievement-seekers following walkthroughs. For those without the patience or coding experience to face the challenges, the package at least includes an escape: a minigame that's, honestly, the best original Solitaire variant ever.
Media

Related
Related
Price dynamics, follower growth, revenue and sales trajectories with interactive tooltips
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Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: English, Simplified Chinese
| $14.99 |
| 189ratings |
| 90% |
| — |
| not modelled |
Matched by title — a reused name can pair the wrong games. * is a critic aggregate. Prices and positions are each store's United States storefront; Epic charts worldwide. Audience and Score too, except Steam's, which is worldwide.
Hours played at review time, across 80 reviews with recorded playtime.
positive critical· bar length = how often the theme comes up
代码没写几行 纸牌玩了400盘
Perhaps my favorite Zachtronics game. My day job is firmware engineering and somehow this captures just the fun parts of the job.
You need brain and that's the thing that I don't have.
i'm only 9 levels in and i'm already being asked to program a game inside a game gg (solitaire is fun)
这是我玩过的最好的一款纸牌游戏
This game is incredible for the niche of people who love to program and problem solve for fun. Following the game's recommendations, it's hard to express how charming it is to print out the language spec, datasheets, etc and put it in a binder with section dividers. Very much worth the cost for the enhanced immersion and fun. And it's a convenient place to write down the tips and tricks you pick up as you learn. It's a challenging game, but very rewarding. The chatter between your coworkers is entertaining, and there's a bit of throughline to the events of the game. It's all very well done. I can't really recommend this game to anybody I know in real life, but it hits the spot for me.
> Moved to China for a better life and to contribute to electronic hardware innovation > Found myself writing pseudo-assembly to control RGB LEDs on a vape pen for a client wtf is my life cost is down though 10/10
This Chinese company hired me to design electronics and all I do is play solitaire. I have no idea why they're still paying me.
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.
Related
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| $3.2M | 5.7K | 96% | $19.99 | |
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| $113.4K | 182 | 75% | $14.99 | |
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| $2.3M | 4.7K | 94% | $14.99 |
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| Game | Estimated lifetime revenue | Reviews | Review score | Price |
|---|---|---|---|---|
| $2.3M | 2.6K | 92% | $39.99 | |
| $2.3M | 6K | 94% | $14.99 | |
| $2.3M | 3K | 78% | $24.90 | |
| $2.3M | 3.3K | 95% | $17.99 | |
| $2.3M | 7.5K | 92% | $14.99 | |
| $2.3M | 7K | 90% | $19.99 |