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Hmmsim Metro
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!
What players say
Steam review score and the most-helpful voices, which may include critical ones. Data as of 2026-05-20.
“What a fabulous game built by 7 people. Be warned, this is a serious sim. DTG please look at what other companies are capable of producing. This accurately recreates the Seoul Metro lines. You will see other, distinctive Korean trains on your journeys. You will learn to master…”
— a player, Steam review · 2 hrs played“My personal review on Hmmsim Metro: I have quite a bit of interest on subway simulator games, and the train simulator genre in general. I've played the original Hmmsim on mobile, and OpenBVE on PC. While scrolling on steam, This game caught my attention and obviously, I bought…”
— a player, Steam review · 15 hrs played“Very detailed simulation, great graphics and performance. The developer provides regular updates. They are clearly passionate about their game and can't wait to see what else they add.”
— a player, Steam review · 5 hrs playedPlayer activity
Monthly average concurrent players. Live count fetched 2026-07-11 13:45 UTC · history via SteamCharts.
Price tracking
US-region pricing (USD), sampled twice daily by our own tracker since 2026-07-11. Steam prices vary by region — always confirm your local price on Steam.
Regional prices at last sample, in local currency — Steam sets each region's price independently.
Cheapest → most expensive, converted to USD at ECB reference rates (2026-07-24). Relative comparison only.
Latest official news
Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.
Main Build 0228 Update
Hello,This update includes the addition of ray tracing settings and a viewing mode.Ray TracingA ray tracing option has been added to significantly improve overall lighting and shadow quality.This feat
Main Build 0129 Update
Hello.In this update, passengers and CCTV have been added.PassengersMoving passengers have been added to stations and trains. Passengers board or alight depending on the situation, showing different l
Main Build 1129 Update
Hello,This update finally introduces weather.Weather Eight types of weather environments have been added, ranging from clear skies to cloudy skies, light rain, heavy rain, and fog. Various weather con
Weather
Hello,Weather effects are finally coming to Hmmsim Metro!From clear skies gradually turning cloudy, to light rain and even heavy downpours — a variety of atmospheric conditions will be available.Take
Main Build 0921 Update
Hello,This update includes a redesign of the train circuit, camera improvements, and performance enhancements. Train Circuit The entire circuit of the train has been redesigned to resemble the actual
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Screenshots
Official Steam store screenshots — click any shot to enlarge.
Facts & details
From the Steam store record, snapshot 2026-05-20.
| Genres | Indie, Simulation, Early Access |
| Player tags | Simulation · Trains · 3D · Realistic · Transportation · Driving · Early Access · Singleplayer · Indie · Immersive Sim · Physics · Automobile Sim (SteamSpy community voting) |
| Features | Single-player · Family Sharing |
| Languages | Korean, English |
| Estimated owners | 50,000 – 100,000 (SteamSpy) |
| Official site | https://jeminie.kr/ |
Minimum system requirements (PC)
Minimum: Requires a 64-bit processor and operating system OS: Windows 10 Processor: Intel Core i5 Memory: 8 GB RAM Graphics: NVIDIA GTX 1060 DirectX: Version 12 Storage: 4 GB available space