The Steam Workshop is usually discussed in terms of its hits — the 40-million-subscription training maps, the mods that become genres. But look at the other end of the catalog and a very different, far more uncomfortable picture emerges: the Workshop's silent majority.

Across the active Steam Workshop, 1,275,899 of the 7,225,818 currently-live mods have never received a single subscription. Roughly 18% of everything ever published on the platform's biggest Workshop catalogs is a complete orphan — zero installs, zero audience, zero signal. And there's one game whose Workshop runs away with this problem: Counter-Strike 2.

The game nobody curates

No big Workshop ecosystem has anywhere near the orphan share of Counter-Strike 2. Of its 144,850 currently-active mods, 115,390 have zero subscriptions — an astonishing 79.7%. By contrast, the closest other major catalog sits in the low teens.

Game Active mods Zero-subscription mods Orphan share
Counter-Strike 2 144,850 115,390 79.7%
DayZ 108,007 13,681 12.7%
ARK: Survival Evolved 29,294 2,986 10.2%
Cities: Skylines 172,156 14,399 8.4%
Aimlabs 84,602 2,518 3.0%
Project Zomboid 60,650 1,889 3.1%
Don't Starve Together 25,452 322 1.3%
RimWorld 59,673 254 0.43%
Left 4 Dead 2 172,172 186 0.11%
Garry's Mod 175,491 48 0.03%
Wallpaper Engine 105,029 11 0.01%
Euro Truck Simulator 2 31,185 1 0.003%

Why is Counter-Strike 2 so badly orphaned? It's a function of both volume and noise. CS2 inherited the entire legacy Counter-Strike: Global Offensive catalog — tens of thousands of now-irrelevant skins, spray templates, crosshair configs and aim-training maps competing for eyeballs in a saturated, same-purpose swamp. When a Workshop is flooded with near-identical low-effort submissions (sprays, single-line configs, re-uploads), new mods sink without a trace. The discovery surface is drowned.

Contrast that with Euro Truck Simulator 2: 31,185 active mods, and exactly one — 0.003% — sits at zero subscriptions. ETS2's Workshop is curated by a mature, dedicated trucking community where even niche accessories (a specific trailer skin, a single truck light) find their handful of buyers. Every mod has a home.

And Wallpaper Engine — the biggest catalog we track at ~105k active mods — has just 11 orphans (0.01%). Wallpapers are cheap to make and cheap to install, so even the low-effort tail gets adopted.

Curated vs. saturated: what separates them

The pattern is consistent across every category:

  • Saturated, purpose-overlapping catalogs (CS2) drown new mods. When a hundred crosshair generators already exist, the hundred-and-first gets nothing.
  • Diverse, asset-type catalogs (Wallpaper Engine, Garry's Mod) keep orphan share near zero because anything can be a niche home.
  • Community-curated, genre-deep catalogs (RimWorld, L4D2, ETS2) keep orphan share tiny because discovery is social, not a feed fight.

Garry's Mod is the fascinating middle case: 175,491 active mods — the single largest Workshop we track — yet only 48 (0.03%) are orphaned. GMod's player-versus-model sandbox means even the 174,000th contraption finds its one enthusiast. Orphan share collapses as catalog diversity of kind rises — CS2's catalog is broad in quantity, GMod's is broad in kind.

The global orphan economy

Zoom out and the count is stark: 1.28 million zero-subscription mods across the platform's active catalog, against 5.95 million mods that have at least one subscriber (and 3.11 million that have 25+). So:

  • 18% of all active Workshop mods have zero installs.
  • The other 82% — 5.95 million mods — account for every subscription on the platform.

These orphans aren't necessarily bad mods. On a saturated catalog like CS2's, being good isn't enough — you're competing against a wall of lookalikes for a front page that never rotates. Discovery fails at the feed level, not the quality level.

What this means for studios and creators

  • An 80%-orphan Workshop is a retention leak, not just a tidying problem. Every mod that sinks contributes to a front page that looks dead — the first page a browsing player sees. CS2's Workshop landing experience showcases a graveyard. Studios that let their Workshop flood without curation are, in effect, hiding their good content.
  • The orphan problem is a curation problem, not a discovery problem. ETS2 and RimWorld prove a community's Workshop can keep orphan share at near-zero even at scale. The difference is deliberate community infrastructure — categories, tags, social sharing, review culture — not raw search.
  • For creators, choose your arena. Publishing a niche asset on a diverse catalog (GMod, Wallpaper Engine, ETS2) gives you a real chance at your first ten subscribers. Publishing into a saturated same-purpose swamp (CS2 skins/sprays) is a lottery against 115,000 other entries — almost all of which get nothing. Your expected audience is shaped by the catalog, not just your work.
  • For platform operators, orphan share is a healthier growth signal than raw item count. A Workshop that grows by publishing 10k mods but keeps 80% of them invisible isn't growing a community — it's growing noise. The studios worth watching hold orphan share down while scaling catalog size.

The honest caveat

"Active" here means the mod is currently listed on its game's Workshop (we exclude removed/deleted items). The zero-subscription mods are genuinely live entries with no current installs. It's also true that a mod can have installs and still be effectively invisible — but the zero case is unambiguous, and it's the one that separates a curated ecosystem from a flooded one.

How we measure

All figures come from ModSignal's live dataset of the Steam Workshop. "Active mod" means a currently-listed item with is_active = true. "Orphan" / "zero-subscription" means its current subscription count is exactly 0. We measured the platform total (7,225,818 active mods, 1,275,899 orphans) plus the per-game counts for the 12 largest tracked catalogs.

The Steam Workshop's orphan problem isn't evenly distributed — it's concentrated spectacularly in Counter-Strike 2, where 4 out of every 5 mods have never earned a single subscriber. The data says clearly: the health of a modding ecosystem isn't how much gets published, but how much of it finds an audience.

This is the kind of ecosystem-health signal ModSignal tracks daily to separate thriving catalogs from flooded ones. Explore the live dataset or compare a healthy ecosystem like Euro Truck Simulator 2 against a saturated one like Counter-Strike 2.