Marcus Webb
You have spent months building your Steam presence. Wishlists are climbing. Now the question every indie developer eventually asks: how many copies will I actually sell launch week?
The honest answer is that nobody knows for certain — not even Valve. But the indie game community has built a surprisingly useful body of data from developer postmortems, public revenue disclosures, and reverse-engineered estimates. The most well-known framework is the Boxleiter Method, which uses Steam review counts to estimate lifetime sales. This calculator applies community-derived wishlist conversion rates to project first-week performance.
The Wishlist Conversion Rate Explained
A wishlist conversion rate is the percentage of people who wishlisted your game before launch who actually buy it during the launch window. This rate varies significantly based on how much marketing you have done, your genre, and how compelling your launch timing is.
The community benchmarks used in this calculator come from developer postmortems published on platforms like GDC, Gamediscover.co, and developer blogs. For a full release with minimal marketing, roughly 10 to 15 percent of wishlists convert in the first week. With a meaningful marketing push ($5,000 or more spent on influencer outreach, ads, or festival presence), that rate climbs to 25 to 40 percent. Publisher-backed games with large PR operations can reach 30 to 50 percent.
Early Access launches typically convert at 50 to 70 percent of the full release rate — people are more hesitant to pay full price for an unfinished product, but the audience that does buy is often more engaged.
How to Use This Calculator
Enter your expected wishlist count at the time of launch, not your current count. If you are six months out and growing at 500 wishlists per month, project forward. Set your price, select your release type and marketing tier, and pick your genre. The genre multiplier reflects relative audience enthusiasm and purchase velocity — roguelikes and RPGs tend to over-perform versus puzzle or visual novel titles at equivalent wishlist counts.
What the Numbers Mean
The launch week estimate includes a low and high range (70 percent to 140 percent of the midpoint estimate) because conversion rates have real variance. Your launch timing, whether you get a Steam feature, and how your launch trailer performs can all shift the outcome by 30 to 50 percent in either direction.
The first month estimate uses a 1.5x multiplier on launch week developer net. In practice, month one is typically 1.3x to 2x launch week revenue as word of mouth, review momentum, and discount-seekers pile in. The first year rough estimate applies a 4x multiplier to month one — heavily front-loaded games see most of their lifetime revenue in year one.
The 10,000 Wishlist Benchmark
Ten thousand wishlists is often cited as the minimum threshold for a “solid indie” launch. At that count with moderate marketing, you can expect roughly 1,200 units in launch week at $14.99, generating around $12,600 in developer net after Steam cut and refunds. That covers a month or two of solo developer living expenses in a low-cost area, but it does not recoup a mid-size budget.
The benchmark table in the calculator shows what different wishlist counts translate to using the standard 20 percent conversion rate. These are rough reference points — the actual number depends on your specific marketing, timing, and product quality.
Growing Your Wishlist Before Launch
The most reliable lever you control is wishlist count itself. Developers who actively pitch to content creators, run demo events, and participate in Steam Next Fest consistently report 2x to 5x wishlist growth compared to passive approaches. A game with 30,000 wishlists and good marketing will almost always outperform a game with 8,000 wishlists and a great product.
The calculator is a tool for setting realistic expectations and identifying the gap between where you are and where you need to be — then building a plan to close that gap before you hit the launch button.