What Valve Released, and Why It Matters
Last week Valve published their 2025 year-end player data report. It's the most granular accounting of player behavior on the platform since the 2020 retrospective, and the metrics it surfaces are the closest thing the industry has to ground truth on what people actually played, for how long, and on what hardware. Most coverage of the data has stayed in the screenshot-this-stat tier. The interesting story is in the trends across years, not the headlines.
Four Things That Actually Matter
1. Action games consolidated, not fragmented. The genre took 31% of total play hours in 2025, up from 27% in 2024 and 24% in 2023. That four-point year-over-year jump is unusual at the platform scale; it's driven almost entirely by Soulslikes (Elden Ring, Black Myth, Lies of P) plus the post-Phantom-Liberty Cyberpunk recovery. The takeaway: action games are not, as some publishers had assumed, a "saturated" category. They consolidated into a small number of dominant titles, but the overall hour count grew.
2. The cozy genre is now a top-five player-hour bucket. Cozy/life-sim took 9% of player hours, up from 5% in 2023. This is a structural shift, not a one-off — Stardew Valley alone accounts for almost 4% of platform hours by itself, and the rest of the bucket has been steadily expanding. The major publishers' hesitancy to invest in this space looks increasingly indefensible.
3. Hardware: handheld outpaced everything else. Steam Deck plus competitor handhelds (Asus ROG Ally, Lenovo Legion Go) accounted for 14% of total play hours, up from 8% in 2024. Total handheld hardware revenue on Steam crossed $1.6B. This is the most underdiscussed trend in the data — handheld is where new players are coming from, not desktop.
4. Average session length is up. Average Steam session in 2025 was 2 hours 14 minutes, up from 1 hour 46 minutes in 2023. This is the opposite of every "attention span is collapsing" narrative — and it's almost entirely driven by the long-session genres (RPG, sim, soulslike) growing while short-session genres (battle royale, MOBA) shrunk.
The One Chart Everyone Got Wrong
Most coverage of the report led with "live-service growing" because the headline live-service hours number ticked up by 6%. That number is misleading. The growth was almost entirely concentrated in three titles: Marvel Rivals (a new launch), Helldivers 2 (continuing momentum), and Path of Exile 2. Strip those three out and the live-service category was flat-to-down year over year. The Steam ecosystem isn't growing more live-service-y; it's becoming dominated by a small number of live-service hits while the long tail of live-service experiments shrinks.
That distinction matters because it suggests the "live-service is the future" thesis publishers spent 2024 internalizing is, increasingly, not what the data says. The data says: live-service is winner-take-most, and the publishers chasing the genre with new entries are mostly burning capital.
The Less-Discussed Long Tail
The second-most interesting thing in the report is the size of the long tail. The top 100 games accounted for 56% of total hours — down from 62% in 2023. That five-point shift toward the long tail is, again, structural: more players are playing more games, including older titles. Stardew Valley posted higher hours in 2025 than 2024, despite the patch cycle being slower. The Witcher 3 sat in the top 50. RimWorld grew. Older games are not aging out.
The economic implication for developers: a moderately successful game now retains player attention longer than it did five years ago. A 2020-released game, if good, has more sustained Steam presence in 2025 than a 2020-released game would have had in 2023. The "evergreen catalog" model that Stardew has demonstrated is becoming structurally more available.
What to Watch in 2026
Three predictions worth banking on for the 2026 retrospective:
- Cozy reaches 12% of platform hours.
- Handheld crosses 20% of total Steam hardware revenue.
- The live-service "winner-take-most" pattern intensifies — top 5 live-service titles capture >75% of category hours.
If those land, the 2026 retrospective will be the year publishers finally stop chasing live-service as the universal AAA strategy. We'll be revisiting these in twelve months.