The Game Census
Hmmsim Metro cover art

Hmmsim Metro

Jeminie Interactive · 2021-06-25

Steam

IndieSimulationEarly Access

Modes: Single player · Perspectives: First person

Releases: Jun 25, 2021 (PC (Microsoft Windows))

Line 1, the most complicated subway in Seoul, is now coming in PC version. You can feel high immersion with the graphics that realize the actual Seoul scenery, the train driving sound, and the realistic train driving system. Experience the operation of the Seoul subway!

Hmmsim Metro is an Indie, Simulation and Early Access game released in 2021, priced at $19.99, with an estimated 50,000 .. 100,000 owners and a Very Positive review sentiment (91% of 1848 reviews).

6
playing now
91%
positive of 1.8k reviews
Very Positive
steam's rating (official)
50,000–100,000
owners (SteamSpy est.)
platinum
deck/linux tier (ProtonDB)
Playable
Steam Deck (Valve)
SteamOS: Playable
$19.99
steam price (US)

6 players in-game as of 2026-10-14 17:00 UTC (census sample)

Hmmsim Metro is a simulation game on the Seoul Subway Line 1. The game was released in Early Access in June 2021, and officially released in December 2021.

Health check

Healthy
  • · 6 players in-game at the last census sample.
  • · 219 reviews in the last 8 weeks (~27/week).
  • · Review velocity up 54% vs the prior 8 weeks.
  • · Top 7% of 49,583 Indie games in the census by review count.
Estimated sales: 37k–83k copies

Review-multiple estimate from 1,848 total reviews — how this is computed.

All-time low: $19.99 at Steam (2021-06-25)via IsThereAnyDeal

Review momentum

PositiveNegative
18318320212026Week of 2021-06-01: 145 positiveWeek of 2021-06-01: 18 negativeWeek of 2021-07-01: 183 positiveWeek of 2021-07-01: 6 negativeWeek of 2021-08-01: 67 positiveWeek of 2021-08-01: 2 negativeWeek of 2021-09-01: 39 positiveWeek of 2021-09-01: 2 negativeWeek of 2021-10-01: 36 positiveWeek of 2021-10-01: 1 negativeWeek of 2021-11-01: 57 positiveWeek of 2021-11-01: 9 negativeWeek of 2021-12-01: 35 positiveWeek of 2021-12-01: 2 negativeWeek of 2022-01-01: 41 positiveWeek of 2022-01-01: 3 negativeWeek of 2022-02-01: 26 positiveWeek of 2022-02-01: 2 negativeWeek of 2022-03-01: 27 positiveWeek of 2022-03-01: 2 negativeWeek of 2022-04-01: 26 positiveWeek of 2022-04-01: 1 negativeWeek of 2022-05-01: 30 positiveWeek of 2022-05-01: 2 negativeWeek of 2022-06-01: 30 positiveWeek of 2022-06-01: 6 negativeWeek of 2022-07-01: 26 positiveWeek of 2022-07-01: 1 negativeWeek of 2022-08-01: 23 positiveWeek of 2022-08-01: 5 negativeWeek of 2022-09-01: 22 positiveWeek of 2022-09-01: 8 negativeWeek of 2022-10-01: 25 positiveWeek of 2022-10-01: 4 negativeWeek of 2022-11-01: 28 positiveWeek of 2022-11-01: 1 negativeWeek of 2022-12-01: 32 positiveWeek of 2022-12-01: 2 negativeWeek of 2023-01-01: 36 positiveWeek of 2023-01-01: 2 negativeWeek of 2023-02-01: 21 positiveWeek of 2023-02-01: 8 negativeWeek of 2023-03-01: 17 positiveWeek of 2023-03-01: 2 negativeWeek of 2023-04-01: 17 positiveWeek of 2023-04-01: 2 negativeWeek of 2023-05-01: 13 positiveWeek of 2023-06-01: 17 positiveWeek of 2023-06-01: 2 negativeWeek of 2023-07-01: 21 positiveWeek of 2023-07-01: 4 negativeWeek of 2023-08-01: 22 positiveWeek of 2023-08-01: 4 negativeWeek of 2023-09-01: 12 positiveWeek of 2023-09-01: 7 negativeWeek of 2023-10-01: 19 positiveWeek of 2023-11-01: 20 positiveWeek of 2023-11-01: 3 negativeWeek of 2023-12-01: 22 positiveWeek of 2023-12-01: 8 negativeWeek of 2024-01-01: 23 positiveWeek of 2024-01-01: 3 negativeWeek of 2024-02-01: 23 positiveWeek of 2024-02-01: 5 negativeWeek of 2024-03-01: 10 positiveWeek of 2024-03-01: 2 negativeWeek of 2024-04-01: 15 positiveWeek of 2024-04-01: 1 negativeWeek of 2024-05-01: 31 positiveWeek of 2024-05-01: 3 negativeWeek of 2024-06-01: 14 positiveWeek of 2024-06-01: 2 negativeWeek of 2024-07-01: 20 positiveWeek of 2024-07-01: 4 negativeWeek of 2024-08-01: 15 positiveWeek of 2024-08-01: 2 negativeWeek of 2024-09-01: 22 positiveWeek of 2024-09-01: 2 negativeWeek of 2024-10-01: 16 positiveWeek of 2024-10-01: 3 negativeWeek of 2024-11-01: 12 positiveWeek of 2024-11-01: 3 negativeWeek of 2024-12-01: 13 positiveWeek of 2024-12-01: 1 negativeWeek of 2025-01-01: 29 positiveWeek of 2025-01-01: 2 negativeWeek of 2025-02-01: 32 positiveWeek of 2025-02-01: 2 negativeWeek of 2025-03-01: 18 positiveWeek of 2025-03-01: 1 negativeWeek of 2025-04-01: 11 positiveWeek of 2025-04-01: 3 negativeWeek of 2025-05-01: 17 positiveWeek of 2025-05-01: 1 negativeWeek of 2025-06-01: 13 positiveWeek of 2025-06-01: 2 negativeWeek of 2025-07-01: 15 positiveWeek of 2025-08-01: 19 positiveWeek of 2025-08-01: 1 negativeWeek of 2025-09-01: 13 positiveWeek of 2025-10-01: 23 positiveWeek of 2025-10-01: 7 negativeWeek of 2025-11-01: 17 positiveWeek of 2025-12-01: 12 positiveWeek of 2025-12-01: 3 negativeWeek of 2026-01-01: 41 positiveWeek of 2026-01-01: 1 negativeWeek of 2026-02-01: 29 positiveWeek of 2026-03-01: 19 positiveWeek of 2026-03-01: 1 negativeWeek of 2026-04-01: 28 positiveWeek of 2026-05-01: 33 positiveWeek of 2026-05-01: 4 negativeWeek of 2026-06-01: 19 positiveWeek of 2026-06-01: 3 negativeWeek of 2026-07-01: 23 positiveWeek of 2026-07-01: 3 negativeWeek of 2026-08-01: 13 positiveWeek of 2026-08-01: 2 negative
Weekly review counts (Steam review histogram). Positive above the line, negative below.

Players online

4612026-09-15 02:00 — 8 players2026-09-16 10:00 — 37 players2026-09-17 18:00 — 3 players2026-09-19 01:00 — 25 players2026-09-20 09:00 — 27 players2026-09-21 17:00 — 6 players2026-09-23 00:00 — 7 players2026-09-24 08:00 — 38 players2026-09-25 15:00 — 19 players2026-09-26 23:00 — 15 players2026-09-28 06:00 — 17 players2026-09-29 14:00 — 23 players2026-09-30 21:00 — 1 players2026-10-02 05:00 — 16 players2026-10-03 12:00 — 27 players2026-10-04 20:00 — 4 players2026-10-06 04:00 — 10 players2026-10-07 11:00 — 37 players2026-10-08 19:00 — 5 players2026-10-10 02:00 — 36 players2026-10-11 10:00 — 28 players2026-10-12 18:00 — 3 players2026-10-14 01:00 — 9 players2026-10-14 17:00 — 6 players
Concurrent players, hourly average, last 30 days (census samples).
699Jun 2021Aug 2026Jun 2021 — avg 69 · peak 165Aug 2021 — avg 17 · peak 63Oct 2021 — avg 9 · peak 25Dec 2021 — avg 13 · peak 57Feb 2022 — avg 13 · peak 41Apr 2022 — avg 17 · peak 81Jun 2022 — avg 11 · peak 35Aug 2022 — avg 16 · peak 78Oct 2022 — avg 13 · peak 39Dec 2022 — avg 18 · peak 53Feb 2023 — avg 15 · peak 43Apr 2023 — avg 13 · peak 39Jun 2023 — avg 13 · peak 38Aug 2023 — avg 13 · peak 32Oct 2023 — avg 14 · peak 38Dec 2023 — avg 11 · peak 33Feb 2024 — avg 14 · peak 39Apr 2024 — avg 10 · peak 36Jun 2024 — avg 11 · peak 33Aug 2024 — avg 10 · peak 27Oct 2024 — avg 11 · peak 40Dec 2024 — avg 15 · peak 65Feb 2025 — avg 23 · peak 86Apr 2025 — avg 14 · peak 46Jun 2025 — avg 15 · peak 53Aug 2025 — avg 15 · peak 42Oct 2025 — avg 17 · peak 55Dec 2025 — avg 20 · peak 58Feb 2026 — avg 25 · peak 78Apr 2026 — avg 17 · peak 54Jun 2026 — avg 17 · peak 47Aug 2026 — avg 18 · peak 47
Monthly average players (source: steamcharts.com) — history via steamcharts.com; live census sampling since Aug 2026.

Attention

1312026-06-01 — 6 pageviews2026-06-05 — 4 pageviews2026-06-09 — 8 pageviews2026-06-13 — 8 pageviews2026-06-17 — 5 pageviews2026-06-21 — 4 pageviews2026-06-25 — 9 pageviews2026-06-29 — 11 pageviews2026-07-03 — 5 pageviews2026-07-07 — 4 pageviews2026-07-11 — 2 pageviews2026-07-15 — 7 pageviews2026-07-19 — 5 pageviews2026-07-23 — 4 pageviews2026-07-27 — 10 pageviews2026-07-31 — 4 pageviews2026-08-04 — 4 pageviews2026-08-08 — 4 pageviews2026-08-12 — 6 pageviews2026-08-16 — 8 pageviews2026-08-20 — 7 pageviews2026-08-24 — 6 pageviews2026-08-28 — 5 pageviews2026-09-01 — 7 pageviews2026-09-05 — 6 pageviews2026-09-09 — 4 pageviews2026-09-13 — 3 pageviews2026-09-17 — 5 pageviews2026-09-21 — 4 pageviews2026-09-25 — 4 pageviews2026-09-29 — 7 pageviews2026-10-03 — 6 pageviews2026-10-07 — 5 pageviews2026-10-11 — 5 pageviews
Daily Wikipedia pageviews (attention proxy, census-recorded).

Details

WindowsSingle-playerFamily Sharing

2 supported languages: Korean, English

Player tags

3DIndieTrainsDrivingPhysicsRealisticSimulationEarly AccessSingleplayerImmersive Sim

Census log

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

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Similarity via IGDB.

Wikipedia ↗Official site ↗