Castle Story Steam key art
Castle Story cover art

Steam revenue analysis

Castle Story Steam Revenue & Sales Estimates

Sauropod Studio

$3MEst. Gross Revenue

332,079 estimated sales, 64% positive reviews, and $2,113,018.68 potentially retained by the developer after Steam's platform fees.

Action64% Positive$4.99

Revenue Overview

$3M

Gross Revenue

$2.1M

Developer Revenue

332,079

Est. Copies Sold

$3M

Revenue / Year (avg. 1 yr)

$1.8MLow estimate
$3MBest estimate
$5.5MHigh estimate

How the revenue splits

Gross Revenue
$3,018,598
− Steam Platform Fee(30.0%)
−$905,579
Developer Revenue
$2,113,019

Developer vs. Steam

Developer: 70.0%($2,113,019)Steam: 30.0%($905,579)

Tiered Fee Structure

Tier 1 ($0–$10M) (30%)$905,579
Tier 2 ($10M–$50M) (25%)—
Tier 3 ($50M+) (20%)—

More context in the Steam game revenue hub or in the Steam revenue calculator.

How we estimate this

64%positive
10,063Total Reviews
6,440positive (64%)
3,623negative (36%)

Step by step

  1. 1

    Capture Steam review volume as the primary demand signal

    10,063 reviews and a 64% positive rating are used as the starting point because Steam review counts correlate strongly with paid ownership.

  2. 2

    Apply a calibrated Boxleiter multiplier

    For Castle Story, we use a midpoint multiplier of ×33 and show a wider range from ×20 to ×60 to reflect uncertainty.

  3. 3

    Use a realistic realized sale price instead of only list price

    Rather than relying only on the current price of $5, we estimate a realized average sale price of $9 to account for discounting over time.

  4. 4

    Translate gross revenue into developer revenue

    We then apply Steam's effective fee rate of 30.0%. That turns an estimated $3,018,598 in gross revenue into roughly $2,113,019 retained by the developer.

Calibrated inputs for this game

Avg. sale price

$9.09

List price $4.99

Boxleiter multiplier

×33

Range ×20–×60

Effective Steam fee

30.0%

Tiered 30 / 25 / 20%

Revenue estimates for Castle Story use the Boxleiter method with a broad range from x20 to x60. For the best estimate we use a calibrated midpoint of x33 and a calibrated average sale price of $9 instead of a flat 30x/0.75 model. Factors like age, price tier, discount history, genre, and review profile all affect the true reviews-to-sales ratio.

Platform Comparison

Hypothetical: What would the developer earn at the same gross revenue?

Steam

Gross revenue baseline: $3,018,598

To developer

$2,113,019

To developer: 70.0%

$2,113,019

Platform fee: 30.0%

$905,579

Epic Games Store

Gross revenue baseline: $3,018,598

To developer

$2,776,366

To developer: 92.0%

$2,776,366

Platform fee: 8.0%

$242,232

Epic: 0% on the first $1M in annual per-app revenue, then 12%. Effective here: 8.0%.

GOG

Gross revenue baseline: $3,018,598

To developer

$2,113,019

To developer: 70.0%

$2,113,019

Platform fee: 30.0%

$905,579

* Actual sales on Epic and GOG are not estimated. Steam's larger user base typically drives substantially higher sales volumes.

Genre Market Position

Top 73% by revenue in Action
73%

Top 73% of Action games

by estimated revenue

0%◆ Median100%

2,141

Top Games Tracked

$6M

Median (tracked top games)

$20.8M

Mean (tracked top games)

Castle Story ranks in the top 73% of 2141 tracked action top-sellers.

Baseline: HelpfulCalculator's curated set of top-grossing Steam games, not the entire Steam catalog. Niche genres may have small samples.

Playtime & Engagement

10.5h avg5.7h median

10.5h

Average Playtime

5.7h

Median Playtime

Castle Story keeps players engaged for an average of 10.5 hours – solid engagement for a action game.

Game Details

Dataset updated: April 18, 2026

DeveloperSauropod Studio
PublisherSauropod Studio
Release Date—
Years on Market1 year
Current Price$4.99
Calibrated Avg. Selling Price$9.09
GenreAction
Peak Players36
SteamSpy Owners200,000 .. 500,000
SteamView on Store

Features

Single-playerMulti-playerPvPOnline PvPLAN PvPCo-opOnline Co-opLAN Co-opCross-Platform MultiplayerSteam AchievementsSteam WorkshopIncludes level editorFamily Sharing

Related Games

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Frequently Asked Questions

How much has Castle Story earned on Steam?

Based on our analysis using the Boxleiter method, we estimate Castle Story's total gross revenue on Steam at approximately $3,018,598.

This estimate comes with a confidence range:

  • Conservative estimate (x20): $1,829,453
  • Calibrated midpoint (x33): $3,018,598
  • Optimistic estimate (x60): $5,488,360

The actual revenue may vary due to regional pricing, seasonal discounts, and refund rates.

How many copies has Castle Story sold on Steam?

With 10,063 Steam reviews and a 64% positive rating, we estimate Castle Story has sold between 201,260 and 603,780 copies, with a best estimate of 332,079.

This is based on the Boxleiter method, which uses the observation that roughly 1 in every 20 to 60 buyers leaves a Steam review. For the midpoint we do not assume a universal 30x value; we use a calibrated multiplier of x33 that adjusts for the title's age, price tier, genre, and review profile.

How much does Sauropod Studio earn from Castle Story?

After Steam's tiered platform fee of effectively 30.0%, Sauropod Studio keeps an estimated $2,113,019 from Castle Story's gross revenue of $3,018,598.

Here's the breakdown:

  • Gross Revenue: $3,018,598
  • Steam's Fee (30.0%): -$905,579
  • Developer Revenue: $2,113,019

Note: This doesn't account for publisher shares, taxes, or development costs.

What percentage does Steam take from Castle Story?

Steam uses a tiered revenue sharing model that reduces the platform's cut as a game earns more:

  • First $10 million: 30% to Steam, 70% to developer
  • $10M to $50M: 25% to Steam, 75% to developer
  • Above $50M: 20% to Steam, 80% to developer

For Castle Story, with an estimated gross revenue of $3,018,598, this results in an effective rate of 30.0%. Steam keeps approximately $905,579 and Sauropod Studio receives $2,113,019.

How accurate are these revenue estimates for Castle Story?

These estimates use the Boxleiter method, a widely-used industry approach that estimates game sales from the number of Steam reviews.

Factors that affect accuracy:

  • Review-to-purchase ratio varies by genre
  • Discount history - games with frequent deep sales may have higher ratios
  • Regional pricing - different prices in different markets are not captured
  • Refunds - Steam's return policy means some counted sales were refunded
  • Bundled sales - keys sold through third-party bundles may not generate reviews

We provide a confidence range ($1,829,453 to $5,488,360) to reflect this uncertainty. For the best estimate we combine the Boxleiter range with a calibrated midpoint (x33) and a calibrated ASP of $9.

What would Castle Story earn on Epic Games Store instead?

If Castle Story generated the same gross revenue on the Epic Games Store, Sauropod Studio would keep approximately $2,776,366 - that's $663,348 more than on Steam.

At this revenue level, Epic's concrete platform fee would be $242,232. Epic charges 0% on the first $1 million in annual per-app revenue and then 12% on the remaining amount. On GOG (30% cut), the developer would earn approximately $2,113,019.

Note: This is a hypothetical comparison. Actual sales volumes differ significantly between platforms, and Steam's larger user base typically drives substantially higher sales.

How long do players spend in Castle Story?

According to SteamSpy data, players spend an average of 10.5 hours in Castle Story, with a median playtime of 5.7 hours. This indicates solid player engagement.