How many copies has InnerSpace sold?

indielist estimates InnerSpace has sold between 6,747 and 15,743 units (median 11,245), derived from its 173 Steam reviews with the white-box Boxleiter v1.0 method. The full breakdown is shown on the page.

Who developed InnerSpace?

InnerSpace was developed by PolyKnight Games and published by Aspyr.

Who published InnerSpace?

InnerSpace was published by Aspyr, developed by PolyKnight Games. See Aspyr's full catalogue and submission status on indielist.

When was InnerSpace released?

InnerSpace was released in 2018.

How many reviews does InnerSpace have on Steam?

InnerSpace has 173 Steam reviews, of which 62% are positive.

Is InnerSpace worth playing?

Steam players rate InnerSpace 62% positive across 173 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.

InnerSpace

Jan 16, 2018 Adventure $19.99

Developer PolyKnight Games Publisher Aspyr

Profile updated Jul 2026

Adventure indie game InnerSpace comes from PolyKnight Games and was published by Aspyr in 2018. It has 350 Steam reviews with 61% positive, a mixed reception signal, and launched at an initial price of $19.99.

InnerSpace is a 2018 Adventure game developed by PolyKnight Games and published by Aspyr. On Steam it has gathered 173 player reviews, 62% of them positive, which counts as a mixed reception among indie titles in the Adventure category. The game is available on linux, mac, windows, and launched at $20. The pairing of developer PolyKnight Games with publisher Aspyr 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's white-box method estimates its lifetime sales at roughly 7,000 to 16,000 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, InnerSpace can be compared against similar Adventure titles and benchmarked on review counts and estimated sales.

Reviews

173

Positive

62%

Steam appid

347000

Engine

Unknown

Players (snapshot)

Unavailable

Sales estimate

v1.0

7K to 16K

units (median: 11K)

≈ $77K to $180K modeled net revenue (fixed store-cut, refund, and regional-price assumptions applied)

7K median 16K

+ How is this calculated?

173 reviews × NB(65) = 11,245 median units

Factor	Adjustment
base	+50
year_2018	+15
price_$20	0
positive_62%	-10
genre_Adventure	+10
final NB	65

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 InnerSpace at roughly 7,000 to 16,000 copies, with a median around 11,000, derived from its 173 Steam reviews using a multi-factor Boxleiter method (version v1.0). That median maps to approximately $128K 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

6 observed days · window low $2.99

Across 6 observed UTC days from 2026-07-29 to 2026-09-02, the daily lowest tracked USD price across stores ranged from $2.99 to $19.99. The tracked-window low was $2.99 on 2026-08-19.

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

Where to buy

Affiliate disclosure

Steam reference

$19.99 Buy
Green Man Gaming

$19.99 Buy
Humble Store

$19.99 Buy
Fanatical -10%

$20.83 Buy
GOG.com

View

Latest tracked store observations (2026-08-26 07:00 UTC to 2026-09-02 06:28 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

linuxmacwindows

Genres

AdventureIndie

Frequently asked questions

How many copies has InnerSpace sold?: indielist estimates InnerSpace has sold between 6,747 and 15,743 units (median 11,245), derived from its 173 Steam reviews with the white-box Boxleiter v1.0 method. The full breakdown is shown on the page.
Who developed InnerSpace?: InnerSpace was developed by PolyKnight Games and published by Aspyr.
Who published InnerSpace?: InnerSpace was published by Aspyr, developed by PolyKnight Games. See Aspyr's full catalogue and submission status on indielist.
When was InnerSpace released?: InnerSpace was released in 2018.
How many reviews does InnerSpace have on Steam?: InnerSpace has 173 Steam reviews, of which 62% are positive.
Is InnerSpace worth playing?: Steam players rate InnerSpace 62% positive across 173 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.

Players looking for games like InnerSpace 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, PolyKnight Games's other releases and Aspyr's wider catalog are one click away, letting developers benchmark where InnerSpace 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 InnerSpace 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.