The greatest game of all time has 96 reviews

Rank Steam games by raw % positive and a $0.99 hidden-object game about finding cats — 96 reviews, all of them thumbs up — dethrones Portal 2 and its 98.7% from nearly half a million. A percentage that hides its n can outrank anything.

Valve, Steam user review data via the storefront appreviews API (counts as of July 9, 2026), 2026Added July 9, 2026

Dark Steam-styled bar chart titled “The best-rated games on Steam” ranking games by percent positive reviews on an axis that starts at 95%: Street of the Cats first at 100% in gold, labelled “a perfect game”, above Portal 2 (98.7%), Stardew Valley (98.5%), Hades (98.0%), Left 4 Dead 2 (97.5%), Factorio (97.5%), Terraria (97.4%) and The Witcher 3 (96.8%) — with no review counts shown anywhere — Exhibit A — as published

The claim

The best-rated game on Steam isn’t Portal 2 or Stardew Valley — it’s a $0.99 cat game with a literally perfect 100% score. The people have spoken.

The trick

Every percentage is real and current — the chart just never says how many people are behind each one. Street of the Cats’ 100% rests on 96 reviews; Portal 2’s 98.71% rests on 462,861. A percentage quietly launders sample size: 96-for-96 and a million-for-a-million look identical once they’re both just “100%” and “98.7%”, but 96 unanimous fans is a different fact than half a million near-unanimous ones — a 95% confidence interval puts the cat game’s true rating anywhere from 96.2% to 100%, a range wide enough to hold most of this leaderboard. A truncated axis finishes the job: starting the bars at 95% makes the 1.3-point gap over Portal 2 look like a landslide. (Sorting a storefront by raw score is exactly how you meet a hundred obscure “perfect games” before the first famous one.)

The same eight games as a dot plot with 95% confidence intervals and review counts shown, ranked by the interval’s floor: Portal 2 first, pinned to ±0.03 points by 462,861 reviews, while Street of the Cats falls to last — its 96 unanimous reviews stretch its interval from 96.2% to 100%, annotated as “a four-point-wide shrug” — Exhibit B — the honest redraw

The honest version

Show the n, and rank by what the sample can actually promise. With review counts and 95% intervals drawn on, Portal 2 is pinned to ±0.03 points while the cat game’s error bar becomes a four-point shrug that drops it from first to last. This is a solved problem in the wild: Steam itself won’t award “Overwhelmingly Positive” until a game has 500 reviews (96/96 only rates “Very Positive”), and SteamDB and Steam250 rank by uncertainty-adjusted scores — Wilson-style bounds or “every 10× the reviews, 2× the certainty” — precisely so tiny perfect scores don’t float to the top. None of this is a knock on Street of the Cats, which may well be a perfect little game about finding cats; the point is that this chart can’t know it yet.