How many copies has Fatal Twelve sold?

indielist estimates Fatal Twelve has sold between 47,838 and 111,622 units (median 79,730), derived from its 938 Steam reviews with the white-box Boxleiter v1.0 method. The full breakdown is shown on the page.

Who developed Fatal Twelve?

Fatal Twelve was developed by LYCORIS and published by Sekai Project.

Who published Fatal Twelve?

Fatal Twelve was published by Sekai Project, developed by LYCORIS. See Sekai Project's full catalogue and submission status on indielist.

When was Fatal Twelve released?

Fatal Twelve was released in 2018.

How many reviews does Fatal Twelve have on Steam?

Fatal Twelve has 938 Steam reviews, of which 92% are positive.

Is Fatal Twelve worth playing?

Steam players rate Fatal Twelve 92% positive across 938 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.

Fatal Twelve

Mar 30, 2018 Adventure $19.99

Developer LYCORIS Publisher Sekai Project

Profile updated Jul 2026

Adventure indie game Fatal Twelve comes from developer lycoris and publisher Sekai Project. Released in 2018, it has 1,033 Steam reviews with 92% positive sentiment and launched at an initial price of $19.99.

Fatal Twelve is a 2018 Adventure game developed by LYCORIS and published by Sekai Project. On Steam it has gathered 938 player reviews, 92% of them positive, which counts as a very positive reception among indie titles in the Adventure category. The game is available on linux, mac, windows, and launched at $20. The pairing of developer LYCORIS with publisher Sekai Project 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 48,000 to 112,000 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, Fatal Twelve can be compared against similar Adventure titles and benchmarked on review counts and estimated sales.

Reviews

938

Positive

92%

Steam appid

620210

Engine

Unknown

Players (snapshot)

Unavailable

Sales estimate

v1.0

48K to 112K

units (median: 80K)

≈ $546K to $1.3M modeled net revenue (fixed store-cut, refund, and regional-price assumptions applied)

48K median 112K

+ How is this calculated?

938 reviews × NB(85) = 79,730 median units

Factor	Adjustment
base	+50
year_2018	+15
price_$20	0
positive_92%	+10
genre_Adventure	+10
final NB	85

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 Fatal Twelve at roughly 48,000 to 112,000 copies, with a median around 80,000, derived from its 938 Steam reviews using a multi-factor Boxleiter method (version v1.0). That median maps to approximately $910K 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 $9.99

Across 6 observed UTC days from 2026-07-17 to 2026-07-22, the daily lowest tracked USD price across stores ranged from $9.99 to $9.99. The tracked-window low was $9.99 on 2026-07-17.

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

Where to buy

Affiliate disclosure

GOG.com -50%

$9.99 Buy
Steam reference

$19.99 Buy
Green Man Gaming

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Fanatical

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Humble Store

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Latest tracked store observations (2026-07-22 17:29 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

Adventure CasualIndie

Frequently asked questions

How many copies has Fatal Twelve sold?: indielist estimates Fatal Twelve has sold between 47,838 and 111,622 units (median 79,730), derived from its 938 Steam reviews with the white-box Boxleiter v1.0 method. The full breakdown is shown on the page.
Who developed Fatal Twelve?: Fatal Twelve was developed by LYCORIS and published by Sekai Project.
Who published Fatal Twelve?: Fatal Twelve was published by Sekai Project, developed by LYCORIS. See Sekai Project's full catalogue and submission status on indielist.
When was Fatal Twelve released?: Fatal Twelve was released in 2018.
How many reviews does Fatal Twelve have on Steam?: Fatal Twelve has 938 Steam reviews, of which 92% are positive.
Is Fatal Twelve worth playing?: Steam players rate Fatal Twelve 92% positive across 938 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 Fatal Twelve 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, LYCORIS's other releases and Sekai Project's wider catalog are one click away, letting developers benchmark where Fatal Twelve 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 Fatal Twelve 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.