Valve has never once published an official revenue figure for Steam, and that isn’t changing in 2026. What is changing is the scale of the estimates filling that gap. According to third-party analytics firm Alinea Analytics, Steam generated roughly $15 billion in gross revenue across the first eight months of 2026, putting the storefront on pace to clear $20 billion for the full year — a figure the platform has never hit before.

The numbers behind the projection

Alinea’s estimate, published through its Mellow-powered tracking and reported by PC Gamer, puts September 2026 as Steam’s best month on record: roughly $1.6 billion in gross revenue, about 13% higher than the same month in 2025. That pushed Q3 2026 revenue to an estimated $5.5 billion and the year-to-date total to around $16.5 billion through September. Extrapolated across the rest of the year — including the holiday quarter and Steam’s ongoing Autumn Sale, which is currently discounting more than 44,000 games — analysts expect the full 2026 total to land above $20 billion, up from an estimated $19.9 billion in 2025, itself a record at the time.

These are gross figures covering all transactions on the platform, including free-to-play titles, not Valve’s own cut after revenue sharing with publishers and developers. They’re also not the only estimate in circulation, and not everyone agrees on the number.

Analysts don’t actually agree on this

Here’s the part that gets lost when a number this large gets repeated across dozens of outlets: Alinea Analytics and rival firm Video Game Insights (VGI) produced wildly different estimates for the same six-month stretch of 2026. VGI put Steam’s first-half revenue at $5.36 billion, down 5% year-over-year. Alinea put the same period at $11.1 billion, up 14.5%. That’s not a rounding gap — it’s more than double. The most likely explanation is methodology: Alinea appears to count all transactions across the platform, including free-to-play games’ in-game spending, while VGI’s figure looks closer to copy-sales revenue alone. Both firms are estimating from the outside, since Steam doesn’t release verified sales data, so “Steam will top $20 billion” is better read as “the most bullish credible estimate currently available” than as settled fact.

Why the number matters anyway, even with the caveats

Even with that uncertainty, the directional story holds up: Steam just had its best month ever, on a platform that was already coming off a record year. That’s consistent with what we’ve written about the industry’s broader 2026 paradox — total industry revenue hit an all-time high of roughly $195.6 billion in 2025 even as tens of thousands of development jobs disappeared, because the money is concentrating around fewer, bigger storefronts and franchises rather than spreading out. Steam’s growth isn’t coming from a thousand small releases each selling a little more; it’s coming from marquee new games and blockbuster remasters pulling huge numbers on a platform that already dominates PC distribution.

That pattern played out directly on Steam this year. The Witcher 3: Wild Hunt — Remastered broke the franchise’s all-time concurrent-player record within hours of its free September 29 relaunch, and big current-generation releases have kept driving front-page traffic and sales spikes all year. Every one of those moments feeds directly into the kind of aggregate number Alinea is now projecting past $20 billion — a handful of massive, highly visible launches doing a disproportionate share of the platform’s total business.

The takeaway

Whether the final 2026 number lands at $19.8 billion, $20.3 billion, or somewhere else entirely depends on which analytics firm you trust and how the holiday quarter actually performs — Valve itself isn’t going to settle the argument. But the broad trend both competing estimates agree on is real: Steam is growing, it’s growing on the back of an increasingly concentrated set of blockbuster releases, and that concentration is the same story driving consolidation and job losses everywhere else in the industry this year. A platform doesn’t need a single confirmed number to make that point; it just needs a September like the one Steam apparently just had.

For more on how that concentration is reshaping the industry around it, see our coverage of gaming’s record profits, record layoffs paradox, and for a look at one of the launches feeding Steam’s 2026 numbers, read about The Witcher 3 Remastered’s concurrent-player record.