- Main Build 0228 Update - 28 February 2026
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 feature only works on GPUs that support hardware ray tracing, such as RTX series cards, and may significantly reduce performance.Viewing ModeA new mode has been added that allows you to watch without driving a train.If you set the operation mode to Viewing in Play-Custom, all trains will be AI-controlled without a player train.Double-click a train on the track map to attach the camera to it, or double-click a station to walk around its platform.Track MapThe design of the track map has been improved.Station markers have been added, and clicking the mouse wheel will synchronize the camera with the selected location.UI / SettingsThe overall UI design has been updated, and the settings menu has bee…
- Main Build 0129 Update - 29 January 2026
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 levels of crowding based on time of day, station, and direction.CCTVPlatform CCTV monitors have been added, allowing you to check passengers boarding or alighting. They are also displayed on the CCTV monitor in the one-handle train cab.SoundsAmbient sounds have been added to outdoor areas and tunnels, and traffic driving sounds have been changed. When windows or doors are opened inside the train, outside sounds can now be heard.SettingsPassenger density and CCTV settings have been added. (If your PC has sufficient performance, it is recommended to set passenger density to the maximum.)Environment volume and train volume settings have been added. A display showing the current value of sliders…
- Main Build 1129 Update - 29 November 2025
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 conditions have been applied to the default scenarios, and you can also set your preferred weather in custom scenarios.Wipers On rainy days, raindrops appear on the front window, and you can wipe them off using the wipers. You can assign a wiper hotkey in the settings.Wheel Slip & Slide Wheel slip and slide have been implemented, requiring caution when operating trains in rainy weather. Using high acceleration or strong braking may cause slip or slide, activating the anti-skid system. You can check slip or slide status in TGIS.Interior Volume An effect has been added that reduces external noise when inside the train. A new interior volume option has been added to the settings, allowing you to…
- Weather - 12 October 2025
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 a sneak peek at what it's like to operate a train in heavy rain.The weather effects are scheduled to be added in the November update.Thank you.
- Main Build 0921 Update - 21 September 2025
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 train more closely. The simplified logic has been removed, and all electrical interconnections like relays/contactors for each car have been implemented. Previously unimplemented functions such as parking brake, security brake, EBS, EBCOS, ACM, and CM operations have also been implemented. Additionally, a circuit monitoring feature has been added to check the overall status of the train’s circuits in real time. Furthermore, a start mode option has been added, allowing the train to start in the initial startup state.TGIS You can switch to other screens by clicking on the TGIS screen. The operation mode 2 screen for the 1000 series train has been added and can be switched using the button on…
- Main Build 0223 Update - 23 February 2025
Hello, In this update, the route has been extended to Gwangmyeong Depot, and the old livery trains are added again. - Gwangmyeong Depot The section from Gwangmyeong to Gwangmyeong Depot has been extended. Two related scenarios have been added, and it can be enjoyed more in timetable mode. - Old Livery Trains Two types of old livery trains have been re-added. Additionally, the details of Gwangmyeong Station have been enhanced, and some signal bugs have been fixed. Thank you for waiting!
- Main Build 0201 Update - 1 February 2025
Hello, In this update, the line has been extended to Gwangmyeong Station, and shuttle trains have been added. - Gwangmyeong Extension The line has been extended from Geumcheon-gu Office to Gwangmyeong (approximately 4 km, 1 station). 4 new scenarios related to this extension have been added, and you can enjoy them more through the timetable mode. - Shuttle Trains Dedicated shuttle trains operating to Gwangmyeong Station have been added. Shuttle trains are operated by a one-man operation, and you must manually open and close the doors. To open the doors, insert the door key into the control panel and press the open button. Additionally, an option to deactivate the AI trains has been added for lower-spec PCs. We apologize for the delay in the update. Thank you for your patience.
- Gwangmyeong Station - 27 January 2025
Hello. The extension of Gwangmyeong Station is in its final stages, and we are aiming for an update by the end of this month. Thank you.
- Main Build 1231 Update - 31 December 2024
Hello, First of all, We apologize for not updating you in a long time. Over the course of several beta updates, we’ve made significant structural improvements. There are many updates, and We will organize them to introduce to you. - Extension to Anyang Station The section from Geumcheon-gu Office to Anyang (about 7 km, 3 stations) has been extended. - New Scenarios 38 new scenarios have been prepared. In particular, many scenarios involving depot entry and exit have been added, including scenarios for Imun Depot and Seongbuk Depot. - Timetable Mode In addition to the prepared scenarios, a new mode has been added where you can select specific sections to play. By selecting a departure and arrival station on the route map, the timetable for that section will be displayed, and you can play through it. - Signals The signals have been completely rearranged with many realistic details added.…
- Improved train modeling and added controller support - 3 March 2023
Hello. In this update, the existing 2nd generation train has been remodeled and the details have been greatly improved. Klaxon pedals have also been added to the remodeled trains, and headlights and connector details have been improved. One-handle controller for Nintendo Switch is supported in this update. If you designate a controller in key setting, you can use it immediately without specifying a serial port. Currently, it is not possible to customize the buttons on the controller. The functions assigned to the current buttons are as follows. Arrow : Reverser Y : ADS A : ELBCOS X : EPanDS B : Klaxon L : HLpS - : HLpDS + : CabLPN2 R : CabLPN1 ZR : TLS In addition, the implementation of some circuits is modified, The Japanese translation has been fully done, and language settings have been changed to be saved. Thank you for waiting.
- New train update - Patch 1 - 13 January 2023
Hello. In this update, the existing 3rd generation two-handle train has been remodeled and the details have been greatly improved. In addition, timetables were added only for 3rd generation trains. We are continuing to remodel the existing trains and the timetable will be applied gradually. Timetable You should turn on the timetable light to always check the timetable in a dark space. The timetable light is located on the ceiling at the top of the timetable and can be turned on and off. If you want to assign a separate key, check the key settings. And the TGIS monitor has been improved and some circuit implementations have been modified. Thank you for waiting.
- New train update - 7 December 2022
Hello. In this update, a 3rd generation one-handle train is added. Key operation - The Throttle key is used to control the Mascon, and the number of Throttle keys has been increased to 3. Each of the three Throttle keys means movement to Power-Neutral-Braking. Please check the key settings. - Added one-man control for one-handle train and several circuit breakers for switchboards. - To fully open the switchboard door, you must first fold the chair. One-man door control If you use the one-man door control, you can more easily operate the door manually. - To use one-man door control, turn on the "OMDCN" circuit breaker on the rear switchboard and insert the door key into the control panel. - To open the door in the opposite direction, handle the "DOBS" switch on the front of the control panel. In addition, the brightness of all train headlights has been improved. Support for additional co…
- Switchboard Update - Patch 1 - 2 October 2022
Hello. This patch brings controller support and fixes a few bugs. Controller support - Mini PTS A switch : ELBCOS B switch : ADS - Master Controller for Train Simulator A button : ADS B button : ELBCOS C button : Headlight S button : Klaxon Other controllers will continue to be supported. In the future, it will also be possible to customize the buttons on the controller. Update details - Support Mini PTS controller - Support Master Controller for Train Simulator controller - Fixed the problem of setting duplicate keys - Automatic setting of ADS when running a scenario - Underground section signal color change - Fixed some circuit implementation Thank you.
- Switchboard Update - 8 September 2022
Hello. We apologize for the long delay in the update. This update adds a switchboard and allows trains to start in their initial state. - Startup option A new startup option has been added to the train selection screen. Three options (initial, switchboard, complete) are available. Initial requires starting the train directly from the beginning. The startup procedure can be found in the tutorial. Switchboard starts the switchboard in the preset state. Complete starts with all startups completed without a separate procedure. - Door control In addition, the option to directly control the door has been added. Enabling this option will no longer automatically open and close the door. How to control the door can be found in the tutorial. Any switch or button can now be interacted with with the mouse. Since the number of switches on the switchboard is large, it is recommended to operate with a…
- New train addition and improvements - 31 March 2022
Hello. In this update, Seoul Metro trains are finally added. - Seoul Metro train The virtual logo of "Seoul Railroad Corporation" is used for Seoul Metro train. There are elements that lack detail in Seoul Metro train. If you post your feedback, we will take it into account as much as possible. - Remodeling of existing trains The interiors of the existing trains have been newly modeled. Now, when SIV goes off when passing the dead section, the interior lights go off. - Improved some train sounds As many of you have requested, we've reverted the GTO sound to the early version of the game. The switchboard update will be done right away next week. Thank you for waiting. Additional patches - The arrangement of Seoul Metro train has been corrected. - The sounds of Seoul Metro train have been adjusted. (Horn, door, motor sound, dead section) - Some train textures have been improved.
- Gameplay Improvements Patch - 11 March 2022
Hello. We are making some gameplay improvements through this patch. All settings will be reset in this patch. Check the settings menu first before launching the game. - Camera improvements The most requested camera improvements have been made. The overall camera movement has been smoothed out, Added mouse sensitivity option to control the speed of movement. In addition, a hotkey has been added to instantly switch left/right from the cab view. From an outside view, you can move the camera to the back of the train. Left-click and drag to move the camera position, and right-click and drag to adjust the viewpoint. You can return to the original position by clicking the wheel. You can also zoom in and out and adjust the viewpoint in a fixed view as well. - UI reorganization The menu and in-game UI have been reorganized to look better. It's not fully finished yet, and we'll be adding loading…
- Performance improvement patch - 25 February 2022
Hello. Through this patch, we will first improve the performance. It required major structural changes inside the game to improve performance and was time consuming. Fortunately, it turned out to be what we had hoped for. Highlights of this performance patch are: - Initial loading time Initial loading times more than doubled. - GPU not fully loaded Fixed an issue that prevented the GPU from fully loading due to CPU load until previous builds. Users with low CPU specifications or high GPU specifications can feel the sensation greatly. (In some cases, FPS improved by a factor of two in our internal testing.) - FPS is not smooth Fixed an issue where the screen seemed to stutter compared to FPS until previous builds. You can feel it more sensibly. Gameplay improvements will be updated soon. Thank you.
- Roadmap for the first half of 2022 - 28 January 2022
Hello. It's been 7 months since we launched Early Access. In the meantime, thanks to your feedback, we have made great progress. In the meantime, we have focused on extending the line. The current length of the line has been doubled when it was first launched. In particular, the added sections are all ground sections and contain very complex landscapes. However, the update schedule we promised did not go well. There were a lot of unreasonable plans, and because of this, many people were disappointed. In the future, we will try our best to plan more carefully and inform you. About the roadmap In this announcement, we want to tell you about what we plan to work on this year. First of all, we ask for your understanding that we have no choice but to talk carefully about the development schedule. The schedules mentioned in the future are development target schedules and are not definitive up…
- Update 4 - Patch 1 - 26 January 2022
Hello. This patch adds background detail and fixes some bugs. Update details - Added freight cars at Kwangwoon University Station and trains at Imun depot - Added Exit 3 of Sinimun Station - Fixed crossing sound - Changed express line signals - Adjusted some signals in the underground section - Adjusted the position of some stop signs at Guro Station - Changed Hide UI key (can now toggle on/off) Known issues - Occasionally, trains can be seen spawning on the starting/destination station. - There are no traffic trains on the Gyeongui-Jungang Line. A new roadmap will also be posted soon. Thank you.
- Update 4 - 24 January 2022
Hello. Finally, the extension to Kwangwoon University Station has been completed. Update details - The map has been extended. (Sinimun~Kwangwoon University, about 2.6km) Known issues - Occasionally, trains can be seen spawning on the starting/destination station. - There are no traffic trains on the Gyeongui-Jungang Line. It will be added in the next update. Trains at Imun depot and freight cars at Kwangwoon University Station will be added as patches soon. We will also be posting a new roadmap later this month. Thank you for waiting.
