Bacterias vs Merge Sharks
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Bacterias
Create unique monsters by injecting bacteria into creatures. Discover new species and expand your collection of bizarre beings. A simple yet engaging game for those who enjoy creature creation and collection.
- Inject bacteria into creatures
- Create unique monsters
- Discover new species
- Collect monsters
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Inject bacteria into creature to get monster !
Merge Sharks
Combine your fish and projectile units to create unique creatures. Expand your aquatic army and conquer the vast ocean.
- Merge fish and projectile units
- Create unique creatures
- Grow your army
- Conquer the open ocean
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Merge your fish and projectile units into creatures no one has seen before. Grow your army and take over the open ocean!
Screenshots
Verdict
The clearest difference is rating: Merge Sharks at 4.7 against Bacterias's 3.9. Merge Sharks also leads on update cadence (every 2 weeks vs every 3 months) and ratings volume (5K vs 212). Bacterias's advantage is in-app purchases (none vs 7). On price, review sentiment, ads and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Merge Sharks sells 7 one-off in-app purchases. Bacterias asks for nothing beyond the download.
Merge Sharks holds the better App Store score, 4.7 against 3.9. That said, the two scores are not equally well evidenced: Merge Sharks has 5K ratings behind it against 212, so its average is the more settled of the two. Written reviews point the same way: 41% of Bacterias's written reviews are positive against 44% of Merge Sharks's.
Bacterias ships an update every 3 months, Merge Sharks every 2 weeks. The most recent releases landed on November 7, 2026 and November 8, 2026 respectively.
| Parameter | Bacterias | Merge Sharks |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (212 ratings) | 4.7 (5K ratings) — better |
| Positive reviews | 40.5% of reviews | 44.2% of reviews — better |
| Number of ratings | 212 | 5K — better |
| Update frequency | Every 3 months | Every 2 weeks — better |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 253 MB | 266 MB |
| Age rating | 12+ | 9+ |
| Developer | Yso Corp | Thomas Cooper |
Customer experience
Bacterias
Merge Sharks
User reviews
Bacterias
From 212 App Store ratingsWhat we love
- 👍 Fun and creative game
- 👍 Original game concept
- 👍 Good for kids
- 👍 Engaging gameplay
- 👍 Interesting fight sequence
Room to improve
- ❌ Excessive ads
- ❌ Frequent ads
- ❌ Ads interrupt gameplay
- ❌ Glitchy gameplay
- ❌ Game lags significantly
Merge Sharks
From 5K App Store ratingsWhat we love
- 👍 Good game
- 🤩 Fun game
- 💡 Merge sharks to get better sharks
- 💡 Defeat other team to get more money
Room to improve
- 🐛 Buggy, issues with progress and character disappearance
- 🤯 Frustrating when best things disappear
- 😩 Forced ads even after paying for no ads
- 🤬 Entire fleet/progress deleted
Bugs and requests
Bacterias
Reported bugs
7 issues- Monster gets too big in battle
- Monster falls through the ground
- Game lags heavily
- Game won't let users play
- Too many glitches
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- Info text gets too huge
- iPad battery drains fast
Requested features
9 requests- Add more animals (lion, elephant, zebra)
- Add decorated cages for monsters
- Add a battlefield to challenge other people
- Add more DNA
- Add more money to spend
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- Fix monster size in battles
- Fix ads frequency
- Add less ads
- Add more creatures
Merge Sharks
Reported bugs
2 issues- Progress and characters randomly disappearing
- Inability to move or control game elements
Requested features
2 requests- More levels and content
- Improved stability and bug fixes
In-app purchases
Bacterias
No in-app purchases
Merge Sharks
- 100 Gems$0.99
- 50 Gems$0.99
- Remove Ads$2.99
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- 200 Gems$2.99
- 700 Gems$9.99
- 1500 Gems$19.99
- 10000 Gems$99.99
Questions
Is Bacterias free?
Is Merge Sharks free?
Which has better reviews, Bacterias or Merge Sharks?
Do Bacterias or Merge Sharks have ads?
Which is updated more often, Bacterias or Merge Sharks?
Other comparisons
