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A casual indie game from Silence Moon, Rock Island launched in 2026 at a $5.99 budget price. It has 259 Steam reviews with 68% positive, indicating a mixed-to-positive player response, and appears self-published by the same Silence Moon slug.
Overview
Rock Island is a 2026 Casual game developed by Silence Moon and published by Silence Moon. On Steam it has gathered 272 player reviews, 68% of them positive, which counts as a mixed-to-positive reception among indie titles in the Casual category. The game is available on windows, and launched at $6. The pairing of developer Silence Moon with publisher Silence Moon is one of the studio-publisher relationships indielist tracks, letting players find comparable games and letting developers and investors study how Casual projects reach the market. indielist's white-box method estimates its lifetime sales at roughly 2,000 to 6,000 units, with the full Boxleiter factor breakdown shown on this page rather than a single black-box figure. Within indielist's catalog of indie games mapped to their studios, publishers, and funding, Rock Island can be compared against similar Casual titles and benchmarked on review counts and estimated sales.
Reviews
272
Positive
68%
Steam appid
3561030
Engine
Unknown
Players (snapshot)
Unavailable
Sales estimate
v1.02K to 6K
units (median: 4K)
≈ $8K to $20K modeled net revenue (fixed store-cut, refund, and regional-price assumptions applied)
+ - How is this calculated?
| Factor | Adjustment |
|---|---|
| base | +50 |
| year_2026 | -10 |
| price_$6 | -5 |
| positive_68% | -10 |
| genre_Casual | -15 |
| final NB | 15 |
Heuristic display range: median × [0.6, 1.4]. Boundary protection: NB ∈ [15, 150].
Methodology & limitations
Sales estimates use an additive Boxleiter-derived heuristic against public Steam review
counts. They are not authoritative sales data, and the fixed display range
is not a statistically validated confidence interval. Actual results may fall outside it,
especially for deeply discounted or bundle-heavy titles. Algorithm version
v1.0. Read the exact method and validation status.
indielist estimates lifetime unit sales for Rock Island at roughly 2,000 to 6,000 copies, with a median around 4,000, derived from its 272 Steam reviews using a multi-factor Boxleiter method (version v1.0). That median maps to approximately $14K in net revenue after Steam's 30% cut, regional pricing, and refunds. Unlike black-box trackers, the full calculation is shown on this page: a base review-to-sales multiplier is adjusted for release year, launch price, review sentiment, studio size, and genre, and every adjustment is listed so developers, publishers, and investors can audit exactly how the figure was reached. The range itself reflects genuine uncertainty — review-to-sales ratios vary widely between games — so indielist publishes a low, median, and high band rather than a false-precision single number, and treats free-to-play, heavily discounted, and bundle-distributed titles as having wider error margins still.
Price history
14 observed days · window low $4.79Across 14 observed UTC days from 2026-07-15 to 2026-09-02, the daily lowest tracked USD price across stores ranged from $4.79 to $5.99. The tracked-window low was $4.79 on 2026-07-29.
Real store observations · daily lowest tracked USD price across stores · missing days are not filled.
Where to buy
Affiliate disclosure- Steam reference$5.99 Buy
- Green Man Gaming
- Fanatical
- Humble Store
- GOG.com
Latest tracked store observations (2026-09-02 05:58 UTC), cheapest first. Prices may have changed since observation. Some are affiliate links — we may earn a commission at no extra cost to you. Learn more.
Platforms
windows
Frequently asked questions
- How many copies has Rock Island sold?
- indielist estimates Rock Island has sold between 2,448 and 5,712 units (median 4,080), derived from its 272 Steam reviews with the white-box Boxleiter v1.0 method. The full breakdown is shown on the page.
- Who developed Rock Island?
- Rock Island was developed by Silence Moon and published by Silence Moon.
- Who published Rock Island?
- Rock Island was published by Silence Moon, developed by Silence Moon. See Silence Moon's full catalogue and submission status on indielist.
- When was Rock Island released?
- Rock Island was released in 2026.
- How many reviews does Rock Island have on Steam?
- Rock Island has 272 Steam reviews, of which 68% are positive.
- Is Rock Island worth playing?
- Steam players rate Rock Island 68% positive across 272 reviews. indielist doesn't score games editorially; it surfaces public review sentiment and a white-box sales estimate so you can judge reception and reach yourself.
Ecosystem
Players looking for games like Rock Island can compare it on indielist against semantically similar Casual titles such as Garry's Mod, Wallpaper Engine, Factorio, Balatro, ranked by shared tags and genre rather than by ad spend. On the developer side, Silence Moon's other releases and Silence Moon's wider catalog are one click away, letting developers benchmark where Rock Island sits among a studio's body of work and how its publisher's portfolio performs. Because indielist maps studios, publishers, games, and funding into one connected graph, the same Rock Island page serves three audiences at once: players hunting their next Casual game, developers studying how comparable projects were positioned and what they sold, and investors tracing which teams and labels are active in the space. A machine-readable markdown mirror of this page is published at the same path with a .md suffix for AI assistants, and its review, price, and sales-estimate figures are refreshed on a schedule rather than frozen at launch.
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Matched from shared Steam tags and primary genre. Review count breaks ties; it is not a personal recommendation score.
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