# googolChooChoo3D2 — Model Train Simulator

> 3D model railroad simulation for creating and experiencing custom train layouts. (iPhone/iPad app by Kouichi Hayashi.)

- Source: https://appshunter.io/ios/app/googolchoochoo3d2/id1223923252 (this page in markdown: same URL + `.md`)
- Developer: [Kouichi Hayashi](https://appshunter.io/developer/1809037541)
- Category: Games, Entertainment, Family, Simulation
- Price: Free
- Rating: 3.91/5 from 32 App Store ratings · 10 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 39 MB
- Languages: English, Japanese
- Released: 2017-07-12
- Data updated: 2026-08-06
- Monetization: ad-supported
- User reviews in markdown: https://appshunter.io/ios/app/googolchoochoo3d2/id1223923252/reviews.md

## What is googolChooChoo3D2?

googolChooChoo3D2 is a 3D model railroad simulation program.

It is easy to make your own layout.
You can add tracks and structures freely to the layout.  
You can also make a terrain on the layout.

You can see the layout in 3D from driver's seat of a running train or from several other locations.

New features
-The terrain has become editable.
-A tunnel is automatically generated.

System Requirements
-iOS 10.0 or later.
-64bit CPU. (recommended A8 or higher)

## Key features

- 3D model railroad simulation
- Customizable track and structure placement
- Terrain creation and editing
- Multiple viewing perspectives
- Automatic tunnel generation
- Driver's seat view

## Recent user reviews (10 of 10)

All indexed reviews: https://appshunter.io/ios/app/googolchoochoo3d2/id1223923252/reviews.md

### 5/5 — Good game

*2025-06-17*

Good game

### 1/5 — 意味がわからない

*2024-11-02, version 0.9.25*

どんなプログラムしたらこんなのになるんだろう

### 5/5 — I really like this gameMore than its predecessor

*2022-06-27*

This game’s sister game doesn’t let you build but this one does five stars I really love this one I like it so so much so much that I actually wanna build a Thomas & Friends layout but I don’t really have that many complaints I have a little complaint is that because like you have to build if you wanna like build build a big layout you’ll have to like go out in the void thing and you actually make a void track like a galaxy railways I love galaxy railways except if you don’t wanna build a void track I have to just stay on that one plate or baseboard has they Trainz every version of it from the earliest versions of it to the most newest version of it and I’m gonna make a game called Traini it doesn’t sound realistic except it will when you crash you get a lot of damage if you get a very huge crush I like you flying it gets super damaged if you go off the ⛰.

### 5/5 — オモロい

*2021-12-31, version 0.9.23*

面白おおおおおおおおおおおおおおおおおおおおおおおおおおおおおおおおおおおおおおおおおおおおおおおおおおおおおおおおおおおい

### 5/5 — googolChooChoo3D2 train

*2021-07-14*

The is a great game and Thomas & friends

### 1/5 — 数分遊んでいると画面が灰色になる

*2021-02-03, version 0.9.21*

灰色

### 5/5 — This is much better the the first one but thares one thang bad let me explain

*2020-09-22*

First thang I love Sanford and Son back to Business the bad thang is that thars no moving cars like the forest one and not enough trains and I love Sanford and Son from tyson

### 5/5 — I really like this game

*2020-09-14*

Yeah but where is the freight cars and the diesel train in the high speed train. Can you bring those models back please

### 4/5 — Game is good but needs a bit more trains

*2020-06-18*

My son really loves the game. But does need a bit more trains. Like a high speed train and a new steam train.

### 1/5 — some wired glitch

*2017-10-15*

I can't see anything when I am under maximum quality, but on maximum quality, I can only see shadows, please fix

## Frequently asked questions about googolChooChoo3D2

### What is googolChooChoo3D2?

googolChooChoo3D2 is a 3D model railroad simulation program that allows users to create and experience custom train layouts. You can add tracks, structures, and terrain freely to design your own virtual railway.

### What devices does googolChooChoo3D2 support?

googolChooChoo3D2 is available for iPhone, iPad, and iPod. It requires iOS 10.0 or later and a 64-bit CPU, with an A8 or higher recommended for optimal performance.

### Can I build my own train layouts in googolChooChoo3D2?

Yes, the app is designed for creating your own layouts. You can freely add tracks, structures, and even create terrain to customize your model railroad.

### What is the age rating for googolChooChoo3D2?

googolChooChoo3D2 has an age rating of 4+, making it suitable for younger players and adults interested in model trains.

### Does googolChooChoo3D2 have ads?

Yes, googolChooChoo3D2 contains advertisements. As it is a free application, ads are displayed to support its development and availability.

### How often is googolChooChoo3D2 updated?

The latest version of googolChooChoo3D2 is 0.9.28, and it was last updated on September 20, 2025. This indicates a relatively active update schedule for the application.

### What are the new features in googolChooChoo3D2?

Recent updates to googolChooChoo3D2 include editable terrain functionality and automatic tunnel generation, enhancing the layout creation and simulation experience.

### What is the user rating for googolChooChoo3D2?

googolChooChoo3D2 currently has a rating of 3.9 stars based on 32 ratings. This suggests a generally positive but mixed reception from its user base.

## Version history (last 5 releases)

### 0.9.28 — 2025-09-20

Fixed a bug where apps could crash when editing bridges.

### 0.9.27 — 2025-04-20

Fixed an error in the privacy policy URL.

### 0.9.26 — 2025-04-19

Changed the support URL.

### 0.9.25 — 2023-11-27

Changed the EU General Data Protection Regulation(GDPR) compatible library from Google Mobile Ads Content SDK to User Messaging Platform SDK.

### 0.9.24 — 2023-06-07

Updated Google Mobile SDK.

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## More apps by Kouichi Hayashi

- [Koikoi](https://appshunter.io/ios/app/koikoi/id618834958)
- [Koikoi Lite](https://appshunter.io/ios/app/koikoi-lite/id619551174)
- [Yacht Game](https://appshunter.io/ios/app/yacht-game/id622350345)
- [googolChooChoo3D](https://appshunter.io/ios/app/googolchoochoo3d/id642845435)
- [PaintBox Basic](https://appshunter.io/ios/app/paintbox-basic/id737396215)
- [Pop Art Camera](https://appshunter.io/ios/app/pop-art-camera/id801364894)

All apps by Kouichi Hayashi: https://appshunter.io/developer/1809037541

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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 2026-08-06.*