# City Train Game 3D vs Underline

The clearest difference is review sentiment: Underline at 100% against City Train Game 3D's 0%. Underline also leads on rating (5.0 vs 1.0) and ads (none vs shown). City Train Game 3D's advantage is in-app purchases (none vs 10) and iOS requirement (13.0 vs 17.0). On price, ratings volume and device support there is nothing between them.

Both are free to download. Underline sells 10 one-off in-app purchases. City Train Game 3D asks for nothing beyond the download.

Underline holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews point the same way: 0% of City Train Game 3D's written reviews are positive against 100% of Underline's.

City Train Game 3D ships an update every 32 months, Underline every 2 days. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | City Train Game 3D | Underline |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/city-train-game-3d-train-sim/id6448837442/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/underline-metro-builder/id6805291888/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 32 months | **Every 2 days** |
| Monetization | Ad-supported | — |
| Size | 259 MB | 394 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [MASH Entertainment](https://appshunter.io/developer/1272624898) | [Harry Attenborough](https://appshunter.io/developer/1896491884) |

## What reviewers say

### City Train Game 3D

[App page](https://appshunter.io/ios/app/city-train-game-3d-train-sim/id6448837442)

Experience the thrill of driving a train through a bustling city with realistic physics and stunning 3D graphics. Transport passengers and cargo, navigate challenges, and master various train types in this immersive simulation game.

**Highlights:** Realistic 3D city environment, Authentic train physics, Passenger and cargo transport missions, Variety of train types, Challenging levels and objectives, Day-night cycles and weather effects

**Features:** macOS Compatibility

**In-app purchases:** none


### Underline

[App page](https://appshunter.io/ios/app/underline-metro-builder/id6805291888)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mumbai | $2.99 | one-time |
| Shanghai | $2.99 | one-time |
| Delhi | $2.99 | one-time |
| Bangalore | $2.99 | one-time |
| Osaka | $2.99 | one-time |
| Kuala Lumpur | $2.99 | one-time |
| Melbourne | $2.99 | one-time |
| São Paulo | $2.99 | one-time |
| Rio de Janeiro | $2.99 | one-time |
| Unlock Everything | $7.99 | one-time |


## Frequently asked questions

### Is City Train Game 3D free?

City Train Game 3D is free to download, with no in-app purchases.

### Is Underline free?

Underline is free to download, with in-app purchases available.

### Which has better reviews, City Train Game 3D or Underline?

Underline is rated higher. City Train Game 3D averages 1.0 out of 5 from 1 ratings, while Underline averages 5.0 from 1 ratings.

### Do City Train Game 3D or Underline have ads?

City Train Game 3D shows ads; Underline does not.

### Which is updated more often, City Train Game 3D or Underline?

City Train Game 3D ships an update every 32 months, and Underline every 2 days. Most recently, City Train Game 3D was updated on November 3, 2026 and Underline on November 8, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*