# Hmmsim Legacy — Train Simulator

> Realistic train simulator game with advanced graphics and BVE Add-On support. (iPhone/iPad app by Jemin Hwang.)

- Source: https://appshunter.io/ios/app/hmmsim-legacy/id1000884506 (this page in markdown: same URL + `.md`)
- Developer: [Jemin Hwang](https://appshunter.io/developer/863234167)
- Category: Games, Racing, Simulation
- Price: $1.99
- Rating: 4.50/5 from 107 App Store ratings · 298 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.0 · 359 MB
- Languages: American English
- Released: 2015-06-12
- Data updated: 2026-08-29
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/hmmsim-legacy/id1000884506/reviews.md

## What is Hmmsim Legacy?

Hmmsim 2 has been reborn with Unreal Engine.
With dynamic sky, shadows, and headlight effects, it delivers more realistic scenery and atmosphere.

Hmmsim Legacy includes built-in routes based on Seoul Subway Lines 2 and 7, recreated with top-quality graphics.
Experience subway operations firsthand.

In addition, Hmmsim Legacy supports BVE Trainsim Add-Ons.
You can enjoy the same BVE routes you played on PC directly on mobile devices.
Expand your experience endlessly with Add-Ons tailored to your preferences.

## Key features

- Advanced graphics
- New map and outer view
- Dynamic trains
- Scoring mode
- BVE Add-On operation upgrade
- Seoul Subway Line 2 & 7 routes

## Chart rankings

- #71 in Top Paid · Racing (US App Store)

## What do users think of Hmmsim Legacy?

Overall sentiment: mixed

**Pros**

- 🎨 Excellent graphics and visual detail
- 🚂 Realistic train simulation mechanics
- 📱 Works well on mobile devices
- 🎮 Engaging gameplay experience
- 🔧 Supports BVE add-ons and route conversion
- 🎯 Accurate Seoul subway representation
- ⭐ Significant improvement over original HmmSim

**Cons**

- 😤 Extremely difficult add-on installation process
- 📦 Limited default routes (only 2 included)
- 👥 No passenger simulation
- 🚪 Missing platform screen doors
- 🪟 No interior cabin view
- 📍 Limited to Seoul subway only
- 🔇 Missing station announcements from original
- ⚠️ Poor iOS/iPad add-on compatibility
- 🔄 Complicated BVE conversion process
- 💰 Requires payment for limited content
- 🚦 Non-functional signal systems
- 🔌 Requires PC/Mac for route installation

**Commonly reported bugs**

- Cannot download MTA routes on iPhone
- Routes fail to appear after app restart on iOS
- Add-ons not loading properly on iOS devices
- Transparency issues in converted BVE routes
- Ground clipping through tracks on some routes
- Signals displaying as oversized rectangles
- Audio missing on some devices
- App crashes and freezes
- Not optimized for iPhone X and later
- Routes not appearing in app despite successful download
- Interac e-transfer payment issues and 24-hour delays
- Inconsistent language display (Korean/English mix)

**Most requested features**

- Add more Seoul subway lines (Lines 1, 3, 4, 5, 6, 8, 9)
- Implement passenger boarding/alighting simulation
- Add interior cabin view with controls
- Include platform screen doors
- Add express service routes
- Implement working signal systems
- Add round-trip functionality
- Include AI traffic on opposite tracks
- Add night mode and different times of day
- Implement in-app route/add-on shop or marketplace
- Add multiplayer functionality
- Expand to other city metro systems (London, Tokyo, Hong Kong, NYC, DC Metro, Chicago CTA)
- Add game controller/Backbone support
- Simplify add-on installation for iOS
- Include more train varieties
- Add career mode
- Implement realistic lighting
- Add trainspotting mode
- Include more outdoor/elevated track routes
- Add station design improvements

## Recent user reviews (10 of 298)

All indexed reviews: https://appshunter.io/ios/app/hmmsim-legacy/id1000884506/reviews.md

### 1/5 — Don’t buy.

*2026-08-02, version 2.0.5*

This game, no matter what, crashes. Even when I set every graphics setting to the lowest, it never loads up any route. Reloaded and tried again millions of times, same result. Stuck on the menu eternally. If I could give 0 stars I would, there’s nothing here. It IS a scam

### 4/5 — Damn, yall cooked

*2026-07-28, version 2.0.5*

You did a great job fixing the bugs even if hmmsim 1 becomes the og hmmsim 2 id play both. Grest job jeminie

### 5/5 — The game has been transformed

*2026-07-19, version 2.0.5*

This app is essentially the gateway to open BVE for mobile, thanks for the new legacy update. Highly recommend ultra high-quality graphics..

### 4/5 — Rediscovering this app!

*2026-07-10, version 2.0.5*

This is great, i used to play bve on my old pc, good to see a way to play this is back.  Where are you supposed to put the bve routes you download though?

### 5/5 — 유저분들 공지(2.0.3업뎃)

*2026-06-18*

님들 이번주 업뎃있어요 그 애니매이션 출입문 스도 정광판 정차위치 모니터 적용 돠요

### 3/5 — It is important to add back the permission for us to add Hmmsim2-based addons

*2026-06-16, version 2.0.2*

I am writing for expressing my concerns regarding the latest update for Hmmsim Legacy. It is observed that ONLY Addons written in OpenBVE format can be imported as an Addon. However, my workshop has been developing some addons that are written in the Hmmsim 2 format (those including scenarios and AI train), as we have spent countless hours reverse engineered the addon format that you have created. I hereby hope that one can allow users to add Hmmsim 2-based addons to Hmmsim Legacy, to increase the flexibility, as well as allowing some profound projects to float back to the surface again.

### 1/5 — This sucks

*2026-06-12, version 2.0.2*

At this point, just bring back the old hmmsim 2. Keep the remake as another app but with a different train as the picture. Hmmsim 2 should’ve gotten an update where you can import routes in apple files like how this remake got. My trains doors are the only thing along with the wheels that load in this remake

### 5/5 — 사운드문제

*2026-06-11*

에드온으로 받은 노선을 플레이하면 가속 또는 제동시 구동음이 이어지지 않습니다. 예를들어 가속시에 가속 구동음이 나다가 중간중간 감속음이 나는 식으로 말이죠. 에드온으러 추가한 건 다 그런거 같습니다 동일 에드온을 Open bve에서플레이 할때는 괜찮으나 hmmsim 에서만 그런현상이 발생하네요

### 5/5 — Update ideas!

*2026-06-11, version 2.0.2*

I love the return of one of the train apps EVER. BUT THERE’S TWO THINGS I ACTUALLY WANTED TO SEE IN THIS APP! The first one, is a new train line added to this game instead of an add-on! The second one, is a passenger cam I actually want to see the POV of one of the passengers in the station and/or in the Train!

### 4/5 — 재밌는 흠심레거시

*2026-06-09*

제가 흠심레거시를 플래이 해보면서 진짜 잘만들셨고 특히 안내방송,환승음악이 조금 아쉬워요 안내방송 이랑 환승음악을 바꾸신다면 별 5개 줄수 있을거 같습니다! 별 4개 정도 드릴게요!~

## Frequently asked questions about Hmmsim Legacy

### What is Hmmsim 2?

Hmmsim 2 is a train simulation game that offers advanced graphics, new maps, and dynamic train features. It allows users to experience realistic metro operations and can also run BVE Trainsim Add-Ons.

### What are the key features of Hmmsim 2?

Key features include advanced graphics, a new map, an outer view of the train, dynamic trains, a scoring mode, and upgraded BVE Add-On operation. It also includes basic routes based on Seoul Subway Line 2 and Line 7.

### Is Hmmsim 2 free to play?

Yes, Hmmsim 2 is a free game. The provided data indicates it does not have in-app purchases or ads, suggesting a completely free experience.

### Can I use PC train simulator content in Hmmsim 2?

Yes, Hmmsim 2 supports BVE Trainsim Add-Ons. This means you can play BVE routes that you would typically use on your PC, and you can add an infinite number of Add-Ons based on your preferences.

### What kind of routes can I play on?

The app features basic routes based on Seoul Subway Line 2 and Line 7, realized with a high level of graphic detail. Additionally, you can expand your gameplay by adding BVE routes from your PC.

## Version history (last 5 releases)

### 2.0.7 — 2026-08-11

- Optimized performance.
- Fixed an issue where the distance between cars would increase on the default map.

### 2.0.6 — 2026-08-09

- Optimized performance.
- Fixed an issue where the distance between cars would increase on the default map.

### 2.0.5 — 2026-06-23

- Add-on Emissive Color and Additive Blend are now supported.
- Add-on Couplers and Bogies are now supported, and default spacing between cars has been applied.
- Fixed an issue where B3D objects were not being loaded.
- Fixed an issue causing some texture mappings to appear corrupted.
- Fixed issues where curves/gradients were missing and stop positions were incorrectly configured.

### 2.0.4 — 2026-06-20

- Partial support for Add-on animations has been added.
- Route Include is now supported for Add-ons.
- The object placement method during Add-on execution has been improved, significantly increasing loading speed and optimizing memory usage.
- Fixed an issue where Korean text was displayed incorrectly in the Add-on list, and the list is now sorted alphabetically.
- Fixed an issue where some motor sounds were played incorrectly.
- Fixed an issue where some objects were missing.

### 2.0.3 — 2026-06-18

- Partial support for Add-on animations has been added.
- Route Include is now supported for Add-ons.
- The object placement method during Add-on execution has been improved, significantly increasing loading speed and optimizing memory usage.
- Fixed an issue where Korean text was displayed incorrectly in the Add-on list, and the list is now sorted alphabetically.
- Fixed an issue where some motor sounds were played incorrectly.

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## More apps by Jemin Hwang

- [Hmmsim - Train Simulator](https://appshunter.io/ios/app/hmmsim-train-simulator/id863234164)

All apps by Jemin Hwang: https://appshunter.io/developer/863234167

## Related topics

[hmmsim 2](https://appshunter.io/ios/topics/hmmsim-2) · [hmmsim legacy](https://appshunter.io/ios/topics/hmmsim-legacy) · [hmmsim](https://appshunter.io/ios/topics/hmmsim) · [jemin hwang](https://appshunter.io/ios/topics/jemin-hwang)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-29.*