Profile updated
Action indie game Mark of the Deep comes from developer mad-mimic and publisher light-up-games. Released in 2025, it has 211 Steam reviews listed as 0% positive with a mixed rating signal, and launched at an initial price of $19.99.
Overview
Mark of the Deep is a 2025 Action game developed by Mad Mimic and published by Light Up Games. On Steam it has gathered 229 player reviews, 75% of them positive, which counts as a mixed-to-positive reception among indie titles in the Action category. The game is available on windows, and launched at $20. The pairing of developer Mad Mimic with publisher Light Up Games is one of the studio-publisher relationships indielist tracks, letting players find comparable games and letting developers and investors study how Action projects reach the market. indielist's white-box method estimates its lifetime sales at roughly 5,000 to 13,000 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, Mark of the Deep can be compared against similar Action titles and benchmarked on review counts and estimated sales.
Reviews
229
Positive
75%
Steam appid
1933370
Engine
Unknown
Players (snapshot)
Unavailable
Sales estimate
v1.05K to 13K
units (median: 9K)
≈ $63K to $146K modeled net revenue (fixed store-cut, refund, and regional-price assumptions applied)
+ - How is this calculated?
| Factor | Adjustment |
|---|---|
| base | +50 |
| year_2025 | -10 |
| price_$20 | 0 |
| positive_75% | 0 |
| final NB | 40 |
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 Mark of the Deep at roughly 5,000 to 13,000 copies, with a median around 9,000, derived from its 229 Steam reviews using a multi-factor Boxleiter method (version v1.0). That median maps to approximately $105K 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
15 observed days · window low $7.99Across 15 observed UTC days from 2026-07-15 to 2026-09-04, the daily lowest tracked USD price across stores ranged from $7.99 to $19.99. The tracked-window low was $7.99 on 2026-07-15.
Real store observations · daily lowest tracked USD price across stores · missing days are not filled.
Where to buy
Affiliate disclosureLatest tracked store observations (2026-09-04 06:14 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 Mark of the Deep sold?
- indielist estimates Mark of the Deep has sold between 5,496 and 12,824 units (median 9,160), derived from its 229 Steam reviews with the white-box Boxleiter v1.0 method. The full breakdown is shown on the page.
- Who developed Mark of the Deep?
- Mark of the Deep was developed by Mad Mimic and published by Light Up Games.
- Who published Mark of the Deep?
- Mark of the Deep was published by Light Up Games, developed by Mad Mimic. See Light Up Games's full catalogue and submission status on indielist.
- When was Mark of the Deep released?
- Mark of the Deep was released in 2025.
- How many reviews does Mark of the Deep have on Steam?
- Mark of the Deep has 229 Steam reviews, of which 75% are positive.
- Is Mark of the Deep worth playing?
- Steam players rate Mark of the Deep 75% positive across 229 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 Mark of the Deep can compare it on indielist against semantically similar Action titles such as Terraria, Rust, Phasmophobia, The Forest, ranked by shared tags and genre rather than by ad spend. On the developer side, Mad Mimic's other releases and Light Up Games's wider catalog are one click away, letting developers benchmark where Mark of the Deep 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 Mark of the Deep page serves three audiences at once: players hunting their next Action 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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