How many copies has HELLCARD: Prologue sold?

indielist estimates HELLCARD: Prologue has sold between 0 and 0 units (median 0), derived from its 0 Steam reviews with the white-box Boxleiter v1.0 method. The full breakdown is shown on the page.

Who developed HELLCARD: Prologue?

HELLCARD: Prologue was developed by Thing Trunk and published by Skystone Games.

Who published HELLCARD: Prologue?

HELLCARD: Prologue was published by Skystone Games, developed by Thing Trunk. See Skystone Games's full catalogue and submission status on indielist.

When was HELLCARD: Prologue released?

HELLCARD: Prologue was released in 2023.

HELLCARD: Prologue

Jan 30, 2023 Adventure

Developer Thing Trunk Publisher Skystone Games

Profile updated Jul 2026

Adventure indie game angle leads HELLCARD: Prologue, a 2023 release from developer thing-trunk and publisher skystone-games. With 390 Steam reviews at 86% positive, it has a modest but very positive player signal, fitting an underrated discovery profile.

HELLCARD: Prologue is a 2023 Adventure game developed by Thing Trunk and published by Skystone Games. It is tracked in indielist's catalog of indie Adventure titles alongside its developer and publisher relationships. The game is available on windows. The pairing of developer Thing Trunk with publisher Skystone Games is one of the studio-publisher relationships indielist tracks, letting players find comparable games and letting developers and investors study how Adventure projects reach the market. indielist publishes a transparent, white-box sales estimate with the full Boxleiter factor breakdown on this page rather than a single black-box figure. Within indielist's catalog of indie games mapped to their studios, publishers, and funding, HELLCARD: Prologue can be compared against similar Adventure titles and benchmarked on review counts and estimated sales.

Reviews

Positive

86%

Steam appid

2207480

Engine

Unknown

Players (snapshot)

Unavailable

Sales estimate

v1.0

0 to 0

units (median: 0)

≈ $0 to $0 modeled net revenue (fixed store-cut, refund, and regional-price assumptions applied)

0 median 0

+ How is this calculated?

0 reviews × NB(70) = 0 median units

Factor	Adjustment
base	+50
year_2023	0
price_$15	0
positive_86%	+10
genre_Adventure	+10
final NB	70

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.

Sales estimates for HELLCARD: Prologue are not yet available because its Steam review count is still being collected. indielist publishes a fully transparent, white-box Boxleiter-derived method rather than a single black-box number, so every estimate can be inspected factor by factor once review data lands.

Price history

5 observed days · window low Free

Across 5 observed UTC days from 2026-07-23 to 2026-08-20, the daily lowest tracked USD price across stores ranged from Free to Free. The tracked-window low was Free on 2026-07-23.

Real store observations · daily lowest tracked USD price across stores · missing days are not filled.

Where to buy

Affiliate disclosure

Steam reference

$0.00 Buy
Green Man Gaming

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Fanatical

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Humble Store

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GOG.com

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Latest tracked store observations (2026-08-20 06:48 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

Genres

AdventureIndieRPG Strategy

Frequently asked questions

How many copies has HELLCARD: Prologue sold?: indielist estimates HELLCARD: Prologue has sold between 0 and 0 units (median 0), derived from its 0 Steam reviews with the white-box Boxleiter v1.0 method. The full breakdown is shown on the page.
Who developed HELLCARD: Prologue?: HELLCARD: Prologue was developed by Thing Trunk and published by Skystone Games.
Who published HELLCARD: Prologue?: HELLCARD: Prologue was published by Skystone Games, developed by Thing Trunk. See Skystone Games's full catalogue and submission status on indielist.
When was HELLCARD: Prologue released?: HELLCARD: Prologue was released in 2023.

Players looking for games like HELLCARD: Prologue can compare it on indielist against semantically similar Adventure titles such as Subnautica, Raft, Satisfactory, Human Fall Flat, ranked by shared tags and genre rather than by ad spend. On the developer side, Thing Trunk's other releases and Skystone Games's wider catalog are one click away, letting developers benchmark where HELLCARD: Prologue 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 HELLCARD: Prologue page serves three audiences at once: players hunting their next Adventure 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.

Matched from shared Steam tags and primary genre. Review count breaks ties; it is not a personal recommendation score.