Coral Island Steam key art
Coral Island cover art

Steam revenue analysis

Coral Island Steam Revenue & Sales Estimates

Stairway Games · Balor Games

$15.8MEst. Gross Revenue

564,928 estimated sales, 88% positive reviews, and $11,316,881.44 potentially retained by the developer after Steam's platform fees.

Action88% Positive$29.99

Revenue Overview

$15.8M

Gross Revenue

$11.3M

Developer Revenue

564,928

Est. Copies Sold

$15.8M

Revenue / Year (avg. 1 yr)

$12.1MLow estimate
$15.8MBest estimate
$36.4MHigh estimate

How the revenue splits

Gross Revenue
$15,755,842
− Steam Platform Fee(28.2%)
−$4,438,960
Developer Revenue
$11,316,881

Developer vs. Steam

Developer: 71.8%($11,316,881)Steam: 28.2%($4,438,960)

Tiered Fee Structure

Tier 1 ($0–$10M) (30%)$3,000,000
Tier 2 ($10M–$50M) (25%)$1,438,960
Tier 3 ($50M+) (20%)—

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

How we estimate this

88%positive
21,728Total Reviews
19,121positive (88%)
2,607negative (12%)

Step by step

  1. 1

    Capture Steam review volume as the primary demand signal

    21,728 reviews and a 88% 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 Coral Island, we use a midpoint multiplier of ×26 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 $30, we estimate a realized average sale price of $28 to account for discounting over time.

  4. 4

    Translate gross revenue into developer revenue

    We then apply Steam's effective fee rate of 28.2%. That turns an estimated $15,755,842 in gross revenue into roughly $11,316,881 retained by the developer.

Calibrated inputs for this game

Avg. sale price

$27.89

List price $29.99

Boxleiter multiplier

×26

Range ×20–×60

Effective Steam fee

28.2%

Tiered 30 / 25 / 20%

Revenue estimates for Coral Island use the Boxleiter method with a broad range from x20 to x60. For the best estimate we use a calibrated midpoint of x26 and a calibrated average sale price of $28 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: $15,755,842

To developer

$11,316,881

To developer: 71.8%

$11,316,881

Platform fee: 28.2%

$4,438,960

Epic Games Store

Gross revenue baseline: $15,755,842

To developer

$13,985,141

To developer: 88.8%

$13,985,141

Platform fee: 11.2%

$1,770,701

Epic: 0% on the first $1M in annual per-app revenue, then 12%. Effective here: 11.2%.

GOG

Gross revenue baseline: $15,755,842

To developer

$11,029,089

To developer: 70.0%

$11,029,089

Platform fee: 30.0%

$4,726,753

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

Genre Market Position

Top 25% by revenue in Action
25%

Top 25% of Action games

by estimated revenue

0%◆ Median100%

2,141

Top Games Tracked

$6M

Median (tracked top games)

$20.8M

Mean (tracked top games)

Coral Island ranks in the top 25% of 2141 tracked action top-sellers, with estimated revenue 3× this group's median.

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

Playtime & Engagement

84.4h avg44h median

84.4h

Average Playtime

44h

Median Playtime

6.1h

Recent Activity (2 Weeks)

Coral Island keeps players engaged for an average of 84.4 hours – solid engagement for a action game.

Current Activity7% still active

Game Details

Dataset updated: April 18, 2026

DeveloperStairway Games
PublisherBalor Games
Release Date—
Years on Market1 year
Current Price$29.99
Calibrated Avg. Selling Price$27.89
GenreAction
Peak Players1,328
SteamSpy Owners500,000 .. 1,000,000
SteamView on Store

Features

Single-playerMulti-playerCo-opOnline Co-opCross-Platform MultiplayerSteam AchievementsFull controller supportSteam CloudFamily Sharing

Related Games

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Frequently Asked Questions

How much has Coral Island earned on Steam?

Based on our analysis using the Boxleiter method, we estimate Coral Island's total gross revenue on Steam at approximately $15,755,842.

This estimate comes with a confidence range:

  • Conservative estimate (x20): $12,119,878
  • Calibrated midpoint (x26): $15,755,842
  • Optimistic estimate (x60): $36,359,635

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

How many copies has Coral Island sold on Steam?

With 21,728 Steam reviews and a 88% positive rating, we estimate Coral Island has sold between 434,560 and 1,303,680 copies, with a best estimate of 564,928.

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 x26 that adjusts for the title's age, price tier, genre, and review profile.

How much does Stairway Games earn from Coral Island?

After Steam's tiered platform fee of effectively 28.2%, Stairway Games keeps an estimated $11,316,881 from Coral Island's gross revenue of $15,755,842.

Here's the breakdown:

  • Gross Revenue: $15,755,842
  • Steam's Fee (28.2%): -$4,438,960
  • Developer Revenue: $11,316,881

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

What percentage does Steam take from Coral Island?

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 Coral Island, with an estimated gross revenue of $15,755,842, this results in an effective rate of 28.2%. Steam keeps approximately $4,438,960 and Stairway Games receives $11,316,881.

How accurate are these revenue estimates for Coral Island?

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 ($12,119,878 to $36,359,635) to reflect this uncertainty. For the best estimate we combine the Boxleiter range with a calibrated midpoint (x26) and a calibrated ASP of $28.

What would Coral Island earn on Epic Games Store instead?

If Coral Island generated the same gross revenue on the Epic Games Store, Stairway Games would keep approximately $13,985,141 - that's $2,668,259 more than on Steam.

At this revenue level, Epic's concrete platform fee would be $1,770,701. 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 $11,029,089.

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 Coral Island?

According to SteamSpy data, players spend an average of 84.4 hours in Coral Island, with a median playtime of 44 hours. This indicates solid player engagement.