# Genius Killer 2 Sandbox vs Fluid Ship Simulator Sandbox

The clearest difference is rating: Genius Killer 2 Sandbox at 3.3 against Fluid Ship Simulator Sandbox's 2.6. Genius Killer 2 Sandbox also leads on review sentiment (51% vs 23%). Fluid Ship Simulator Sandbox's advantage is update cadence (every 2 days vs every 10 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Genius Killer 2 Sandbox sells 7 in-app purchases, starting at $3.99 per month and Fluid Ship Simulator Sandbox sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Genius Killer 2 Sandbox holds the better App Store score, 3.3 against 2.6. Both are backed by a comparable volume of ratings — 83 and 94 respectively. Written reviews point the same way: 51% of Genius Killer 2 Sandbox's written reviews are positive against 23% of Fluid Ship Simulator Sandbox's.

Genius Killer 2 Sandbox ships an update every 10 months, Fluid Ship Simulator Sandbox every 2 days. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Genius Killer 2 Sandbox | Fluid Ship Simulator Sandbox |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (83 ratings)](https://appshunter.io/ios/app/genius-killer-2-sandbox/id1507755806/reviews)** | [2.6 (94 ratings)](https://appshunter.io/ios/app/fluid-ship-simulator-sandbox/id1542522073/reviews) |
| Number of ratings | 83 | **94** |
| Positive reviews | **50.7% of reviews** | 22.9% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 10 months | **Every 2 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 228 MB | 159 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Darya Vladislavovna](https://appshunter.io/developer/1067566962) | [Serafim Katasonov](https://appshunter.io/developer/1532414774) |

## What reviewers say

### Genius Killer 2 Sandbox

[App page](https://appshunter.io/ios/app/genius-killer-2-sandbox/id1507755806)

Design and construct unique destructive machines in an open-world sandbox. Engage in combat with various enemies across land, sea, and air using your custom-built creations. The intuitive editor allows for complex control schemes for any vehicle.

**Highlights:** Build destructive machines, Intuitive editor, Open world combat, Create flying vehicles, Build water transport, Secret weapon acquisition

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO user subscription | $3.99 | per month |
| 1000 Gold | $2.99 | one-time |
| 2500 Gold | $5.99 | one-time |
| Silver Skin | $6.99 | one-time |
| 5000 Gold | $10.99 | one-time |
| 10 000 Gold | $19.99 | one-time |
| 30 000 Gold | $99.99 | one-time |

**What reviewers like**

- 👍 Great creativity and textures
- 👍 Very good game overall
- 👍 Good building game
- 👍 Awesome game with cool stuff
- 👍 Love the game

**What reviewers complain about**

- 🐛 Game is full of bugs
- 🐛 Game is unplayable
- 🐛 Too many ads
- 🐛 Difficult to build
- 🐛 Game crashes frequently

**Reported bugs**

- Workshop keeps loading nonstop
- Game doesn't work on mobile
- Game is full of bugs
- Can't delete blocks
- Tutorial only on YouTube

**Requested features**

- More maps
- Colorization of parts
- Add gears for machines
- Add ballast tanks and torpedo tubes
- Mobile friendly version


### Fluid Ship Simulator Sandbox

[App page](https://appshunter.io/ios/app/fluid-ship-simulator-sandbox/id1542522073)

Engage in realistic water physics simulations, build and destroy various watercraft, and experiment with environmental parameters like wave frequency and density. Create custom ships or structures and test their resilience with explosions and demolitions.

**Highlights:** Ship editor for custom builds, Real-time destruction sandbox, Adjustable water physics parameters, Variety of bombs and explosions, Build custom structures, Launch ships in deep water

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $1.99 | one-time |

**What reviewers like**

- 👍 Realistic and fun
- 👍 Entertaining game
- 👍 Good for kids
- 👍 Has potential

**What reviewers complain about**

- 👎 Thumbnail is a lie
- 👎 Trash physics
- 👎 Cannot sink ships
- 👎 Too many ads
- 👎 Inappropriate ads

**Reported bugs**

- Ads still present after purchase
- Premium purchase not applied
- Cannot save created ships
- Game doesn't let you play
- Settings are unreadable/unusable

**Requested features**

- Add more ships
- Add the Titanic
- Add airplanes
- Add bigger ships
- Make ships sink


## Frequently asked questions

### Is Genius Killer 2 Sandbox free?

Genius Killer 2 Sandbox is free to download, with in-app purchases available.

### Is Fluid Ship Simulator Sandbox free?

Fluid Ship Simulator Sandbox is free to download, with in-app purchases available.

### Which has better reviews, Genius Killer 2 Sandbox or Fluid Ship Simulator Sandbox?

Genius Killer 2 Sandbox is rated higher. Genius Killer 2 Sandbox averages 3.3 out of 5 from 83 ratings, while Fluid Ship Simulator Sandbox averages 2.6 from 94 ratings.

### Do Genius Killer 2 Sandbox or Fluid Ship Simulator Sandbox have ads?

Both Genius Killer 2 Sandbox and Fluid Ship Simulator Sandbox show ads.

### Which is updated more often, Genius Killer 2 Sandbox or Fluid Ship Simulator Sandbox?

Genius Killer 2 Sandbox ships an update every 10 months, and Fluid Ship Simulator Sandbox every 2 days. Most recently, Genius Killer 2 Sandbox was updated on October 24, 2026 and Fluid Ship Simulator Sandbox on October 21, 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.*