The Game Census
The Butterfly Sign: Human Error cover art

The Butterfly Sign: Human Error

Quantum Phoenix Bucharest · 2017-03-16

Steam

ActionAdventureIndie

Modes: Single player · Perspectives: First person

Releases: Mar 16, 2017 (PC (Microsoft Windows))

The Butterfly Sign: Human Error is the second chapter of the first person detective video game in which we are playing as a sole survivor of a serious terrorist attack. Protagonist is the only witness of the incident and his fate depends on his memories.

The Butterfly Sign: Human Error is a $1.74 Action, Adventure, and Indie game released in 2017, with an owner estimate of 50,000 .. 100,000 and a Mixed sentiment (49% of 83 reviews).

0
playing now
49%
positive of 83 reviews
Mixed
steam's rating (official)
50,000–100,000
owners (SteamSpy est.)
40/100
IGDB user rating (0 ratings)
Unknown
Steam Deck (Valve)
SteamOS: 0
$1.74
steam price (US)

0 players in-game as of 2026-10-15 11:00 UTC (census sample)

The Butterfly Sign: Human Error is the second chapter of the first person detective video game in which we are playing as a sole survivor of a serious terrorist attack. Protagonist is the only witness of the incident and his fate depends on his memories. That’s why he goes in for a desperate measure: he takes the experimental medication called “Rammex”, which immerses him in the depths of his mind and makes him accurately recollect a chain of events, which had happened. While wandering through his own memories, the protagonist has to look for evidences and learn bits and pieces to find the gui(Storyline via IGDB)

Health check

Quiet
  • · 0 players in-game at the last census sample.
  • · 3 reviews in the last 8 weeks (~0/week).
  • · Review velocity up 50% vs the prior 8 weeks.
  • · Current weekly pace is under 5% of the all-time peak week (22 reviews).
  • · Top 42% of 28,012 Action games in the census by review count.

Health tier since 2026-09-01

Estimated sales: 2.1k–5.0k copies

Review-multiple estimate from 83 total reviews — how this is computed.

Review momentum

PositiveNegative
171720172026Week of 2017-03-01: 17 positiveWeek of 2017-03-01: 5 negativeWeek of 2017-04-01: 3 negativeWeek of 2017-05-01: 3 positiveWeek of 2017-06-01: 2 positiveWeek of 2017-06-01: 1 negativeWeek of 2017-07-01: 1 negativeWeek of 2017-08-01: 1 negativeWeek of 2017-09-01: 1 negativeWeek of 2017-11-01: 1 negativeWeek of 2017-12-01: 2 negativeWeek of 2018-03-01: 2 negativeWeek of 2018-04-01: 1 positiveWeek of 2018-04-01: 2 negativeWeek of 2018-05-01: 1 positiveWeek of 2018-06-01: 1 negativeWeek of 2018-12-01: 1 negativeWeek of 2019-12-01: 1 negativeWeek of 2024-01-01: 1 negativeWeek of 2025-12-01: 1 positiveWeek of 2026-05-01: 1 negative
Weekly review counts (Steam review histogram). Positive above the line, negative below.

Players online

002026-09-15 20:00 — 0 players2026-09-17 04:00 — 0 players2026-09-18 12:00 — 0 players2026-09-19 19:00 — 0 players2026-09-21 03:00 — 0 players2026-09-22 11:00 — 0 players2026-09-23 18:00 — 0 players2026-09-25 02:00 — 0 players2026-09-26 09:00 — 0 players2026-09-27 17:00 — 0 players2026-09-29 00:00 — 0 players2026-09-30 08:00 — 0 players2026-10-01 15:00 — 0 players2026-10-02 23:00 — 0 players2026-10-04 07:00 — 0 players2026-10-05 14:00 — 0 players2026-10-06 22:00 — 0 players2026-10-08 05:00 — 0 players2026-10-09 13:00 — 0 players2026-10-10 20:00 — 0 players2026-10-12 04:00 — 0 players2026-10-13 12:00 — 0 players2026-10-14 19:00 — 0 players2026-10-15 11:00 — 0 players
Concurrent players, hourly average, last 30 days (census samples).

Price history

$4.99$1.492017-03-172020-08-312017-03-17 — best price $4.492017-05-29 — best price $2.492017-06-22 — best price $2.492017-07-31 — best price $2.492017-10-02 — best price $2.492017-10-26 — best price $2.492017-11-22 — best price $2.492017-12-11 — best price $2.492017-12-21 — best price $2.492018-02-15 — best price $2.492018-02-26 — best price $2.492018-05-14 — best price $2.492018-06-21 — best price $1.742018-08-13 — best price $2.492018-10-15 — best price $2.242018-10-29 — best price $2.492018-11-22 — best price $3.992018-12-20 — best price $3.992019-01-07 — best price $1.992019-02-04 — best price $2.492019-06-27 — best price $1.492019-07-15 — best price $1.492019-10-07 — best price $2.242019-10-28 — best price $2.492019-11-27 — best price $2.492019-12-09 — best price $2.492019-12-19 — best price $2.492020-03-23 — best price $1.742020-06-26 — best price $2.492020-08-24 — best price $2.492020-08-31 — best price $4.99
Lowest recorded price across tracked stores, per day (census snapshots).

Completion

60+
achievements tracked
4.1%
earned "The first investigation."
3.6%
median achievement earned by

Global achievement rates from Steam.

Details

WindowsSingle-playerSteam AchievementsSteam Trading CardsPartial Controller SupportFamily Sharing

2 supported languages: English, Russian

Player tags

IndieActionAdventure

Census log

Computed from census-recorded observations only — dates are observation dates.

Players also track

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Similarity via IGDB.

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