TL;DR
Without Steamworks access, Steam publishes a game's follower count, review count and score, price, tags, launch date and top-seller rank. Real wishlist counts, impressions, page visits, click-through rates and channel attribution stay behind the developer login. Any wishlist figure derived from followers is a directional estimate, never a count.
Public Steam data covers demand signals; Steamworks covers the whole funnel
For your own game, Steamworks wins on every measurement question, and for any game you do not control, public data is all there is. Steamworks is Valve's partner platform: the login-gated backend where a game's owner sees its private reports. That divide creates two access levels with very different views of the same store page.
With Steamworks access, you read the funnel directly: impressions, page visits, click-through rates, real wishlist counts, real units sold, revenue, refunds, regional splits, and UTM attribution (Steam's own tracking of which campaign links drove a wishlist or purchase). Without it, Steam still publishes a useful surface for any game: follower counts, review counts and scores, pricing, top-seller ranks, tags, and launch dates.
With Steamworks access vs without: the full comparison
| What you want to know | Public (no Steamworks) | With Steamworks |
|---|---|---|
| Wishlist count | No count published; estimate only, derived from followers | Exact daily balance, adds, deletes |
| Impressions | Nothing, no public proxy | Exact, from the traffic report |
| Store page visits | Nothing, no public proxy | Exact |
| Click-through rates | Nothing | Exact, derivable at each step |
| Units sold, revenue, refunds | No refund or revenue data | Exact sales reports |
| Regional sales splits | Not available | Exact by country |
| Channel attribution | Only what you build off-Steam | Built-in UTM reports |
| Followers, reviews, price, tags, rank | Fully public, no key or login needed | Visible |
The Steamworks column is exact ground truth, and only for games you or your clients control. The public column is exact for what it measures (a review count is a real number) while everything funnel-shaped is either an estimate or a blank.
Follower-based wishlist estimates are directional, never counts
The most common workaround is the follower multiplier: taking a game's public follower count and multiplying it by a published ratio to approximate wishlists. Published industry surveys put that ratio between 9.6x and 12x for unreleased games. A game with 5,000 followers at roughly 10x pencils out to around 50,000 wishlists, useful for sizing a competitor, useless as a number to report to a publisher.
Follower counts themselves are real: Steam exposes them publicly for any game with a community hub, no API key or login required. The multiplier is where the precision ends, so treat every derived wishlist figure as directional.
Two moves close most of the gap when you lack Steamworks access:
- Build your own off-Steam measurement. You always control your own destinations. Route campaign traffic through link tracking to a landing layer you own, and capture email or Discord sign-ups there. None of that needs Valve's permission.
- Use public data for the questions it answers exactly. Review velocity, price changes, tag positioning, and follower growth are real measurements, and they are the honest basis for competitor tracking.
How the two access levels combine into one attribution setup
Even with full Steamworks access, the built-in UTM reports only attribute wishlists and purchases completed within a 72-hour window, so they undercount campaign impact; the sibling breakdown of why Steam UTM tracking undercounts your marketing covers the mechanics. The durable setup layers the two: Steamworks reports as ground truth for your own game, public data for the market around it, and owned off-Steam tracking to catch what the 72-hour window drops. That layering is the core of marketing attribution for Steam games, which walks through the full setup.
Closing the attribution gap does not require waiting on Steamworks data you may never get. Attribution connects ad spend, Steam link-tracking data, and wishlist/conversion numbers by channel, so a weekly check shows which channel is actually working rather than one blended number that hides it.
Sources: Steamworks partner documentation for the developer-layer reports and UTM analytics. Publicly available Steam storefront and community data for the public column. Published industry surveys of follower-to-wishlist ratios, which give a directional range rather than a count for any single game.
