# Monsters Project vs Backrooms Union Multiplayer

The clearest difference is review sentiment: Monsters Project at 100% against Backrooms Union Multiplayer's 50%. Monsters Project also leads on in-app purchases (none vs 8) and ads (none vs shown). Backrooms Union Multiplayer's advantage is update cadence (every 3 weeks vs every 93 months) and ratings volume (3.4K vs 13). On price and device support there is nothing between them.

Both are free to download. Backrooms Union Multiplayer sells 8 one-off in-app purchases. Monsters Project asks for nothing beyond the download.

Monsters Project holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Backrooms Union Multiplayer has 3.4K ratings behind it against 13, so its average is the more settled of the two. Written reviews point the same way: 100% of Monsters Project's written reviews are positive against 50% of Backrooms Union Multiplayer's.

Monsters Project ships an update every 93 months, Backrooms Union Multiplayer every 3 weeks. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Monsters Project | Backrooms Union Multiplayer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (13 ratings)](https://appshunter.io/ios/app/monsters-project/id1142660966/reviews)** | [4.6 (3.4K ratings)](https://appshunter.io/ios/app/backrooms-union-multiplayer/id6736498895/reviews) |
| Number of ratings | 13 | **3.4K** |
| Positive reviews | **100.0% of reviews** | 49.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 93 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 65 MB | 281 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 12+ |
| Developer | [Dana Hocking](https://appshunter.io/developer/790445840) | [Pedro Crispim](https://appshunter.io/developer/1622822491) |

## What reviewers say

### Monsters Project

[App page](https://appshunter.io/ios/app/monsters-project/id1142660966)

Explore a mysterious world filled with unique abilities, challenging levels, and hidden secrets. Discover potions and avatars as you navigate this strange new place. This game offers a unique experience with mini-games and a focus on exploration.

**Highlights:** 3 Unique Abilities, 8+ Levels, 14 Potions, 13 Avatars, Mini-Games, Exploration

**Features:** macOS Compatibility

**In-app purchases:** none


### Backrooms Union Multiplayer

[App page](https://appshunter.io/ios/app/backrooms-union-multiplayer/id6736498895)

Explore the eerie, maze-like dimensions of the Backrooms with friends or solo. Scavenge for resources, survive lurking horrors, and uncover the mysterious purpose of the Union. Each level offers new challenges, traps, and unpredictable encounters.

**Highlights:** Multiplayer co-op exploration, Scavenge for critical scraps, Survive lurking horrors and monsters, Explore maze-like dimensions, Uncover Union's secrets, Unpredictable challenges and traps

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gold 1 | $0.99 | one-time |
| Gold 2 | $1.99 | one-time |
| Gold 3 | $3.99 | one-time |
| Starter Pack | $4.99 | one-time |
| Remove Ads | $4.99 | one-time |
| Gold 4 | $7.99 | one-time |
| Gold 5 | $24.99 | one-time |
| Gold 6 | $49.99 | one-time |

**What reviewers like**

- 👍 Fun and collaborative gameplay
- 🕹️ Good amount of horror elements

**What reviewers complain about**

- 🐛 Items phasing through the ground
- 🚫 Unable to use bats to kill monsters
- 🚫 Inability to play with friends on different platforms
- 💢 Too many ads
- 🚫 Multiplayer not working properly

**Reported bugs**

- Items phasing through the ground
- Multiplayer not working
- Ads breaking game audio
- Portal being busy even when closed

**Requested features**

- Add ability to kill monsters with bats
- Improve multiplayer functionality
- Reduce number of ads
- Add more level varieties, entities, and rooms


## Frequently asked questions

### Is Monsters Project free?

Monsters Project is free to download, with no in-app purchases.

### Is Backrooms Union Multiplayer free?

Backrooms Union Multiplayer is free to download, with in-app purchases available.

### Which has better reviews, Monsters Project or Backrooms Union Multiplayer?

Monsters Project is rated higher. Monsters Project averages 5.0 out of 5 from 13 ratings, while Backrooms Union Multiplayer averages 4.6 from 3.4K ratings.

### Do Monsters Project or Backrooms Union Multiplayer have ads?

Backrooms Union Multiplayer shows ads; Monsters Project does not.

### Which is updated more often, Monsters Project or Backrooms Union Multiplayer?

Monsters Project ships an update every 93 months, and Backrooms Union Multiplayer every 3 weeks. Most recently, Monsters Project was updated on October 24, 2026 and Backrooms Union Multiplayer on October 28, 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.*